Informasi bagi para pemain pingpong diseluruh galaksi. Peraturan main pingpong yang baru sudah lahir, akikahnya menyusul ya.

1. Sistem poin bukan rally, melainkan sitem pindah bola seperti badminton. Setiap regu yang tidak berhasil mengembalikan bola ke daerah musuh akan kehilangan hak-nya untuk servis.

2. Pemenang adalah yang pertama kali mencapai poin 30.

3. Ada 3 pilihan bantuan yang bisa digunakan oleh sebuah tim. Ketiga pilihan itu berlaku tiap set dan akan di reset.

a) 50:50 ——> salah satu lawan akan menyingkir dari meja pertandingan dan tidak boleh ikut dalam permainan selama selang waktu 1 poin.
b) Phone the friend / telepon sahabat —–> musuh akan mengangkat telepon (walaupun dia tidak sedang ditelepon), dan diwajibkan menjauh dari meja pertandingan selama 1 poin.
c) Ask The Audience
Boleh bertanya pada penonton. Apapun pertanyaannya minumnya teh botol sosro :p

4. Set penentu kemenangan disebut SUDDENDEATH set. Maksudnya, walaupun sebuah tim sudah memenangkan 10set dari 10set jika tim itu kalah pada SUDDENDEATH set maka tim itu berhak menyandang status pecundang.

Sekian peraturan pingpong yang tidak bermutu dan sangat sesat, mohon untuk tidak diperhatikan dan dianggap sebagai kentut sajalah. Datang tidak bilang-bilang hilang meninggalkan bau yang mendalam.

Terimakasih

jonoterbakar

Geen zorgen, die titel is gewoon een truc om lezers te trekken! :p
Alles is in orde.

Ik zit nog steeds in Bangkok, was de eerste dagen zo moe van de reis en alle indrukken dat ik maar besloten heb om dagtrips te maken. Zondag ga ik naar Cambodja.

De afgelopen week heb ik heel veel gedaan: Tijger tempel, watervallen, Bridge over the River Kwai, olifanten rijden, sky bar (trendy bar boven op een wolkenkrabber!), thai massage, fish massage, beetje gewinkeld, PingPong Show (:O later meer), real floating market, schorpioenen, sprinkhanen en meelwormen gegeten. En nog veel meer! Heb ook veel andere reizigers ontmoet en elke avond gaan we wel iets drinken. Gezellig!

Ook ben ik erachter gekomen dat Tuktuk en taxi niet efficient zijn, maar de Motor taxi dat wel is, echt heel stoer! De motor gaat overal doorheen en staat nooit stil. Dus erg Bangkok dangerous Jan en ik hebben wel een stoere Tuktuk rit gehad, waar we de chauffeur hebben overgehaald om een wheelie te maken!! Dat was echt lachen!

Als het goed is doet mijn Macbook het morgen weer, dan zal ik fotos uploaden en een langere blog plaatsen. Ik moet nu gaan, want dit internet cafe is niet 24 uur per dag geopend.. Dus word eruit gezet!

I’m about to watch the film Triumph of the Neards on PingPong.
Let’s hope my lousy laptop can handle all the streaming content… There are no garanties - all technology isn’t good, unfortunately.

Pois é, gostosas também jogam

Pues sí, y además pasárselo pipa. Basta ser niño y no ser de familia rica:

As the reigning table tennis world champion with two Olympic silver medals under his belt, China’s Wang Hao almost had it all — except a girlfriend.

The 25-year-old was banned from dating until recently, when national team officials permitted his relationship with former national teammate, 23-year-old Peng Luyang, the government-owned China Daily reported.

“Both of them are old enough and it’s normal,” the newspaper quoted Peng’s coach Qiao Yunping as saying.

Strict control of athletes’ personal lives is common in China’s rigid state-run sporting system, which grooms young hopefuls in specialized sports schools around the country to become gold medalists, providing them with intensive training and free food, clothes and shelter.

Under the watchful eye of team officials, star athletes are often banned from dating or marrying until a certain age, restricted in endorsement contracts and sometimes have a large percentage of their winnings taken away.

Athletes who date without permission risk being punished. In 2004, Wang started dating another fellow national team player, Fan Ying, and officials kicked Fan off the national team. Media reports said Wang avoided punishment at the time because his world ranking was much higher than Fan’s.

As inspired by Tiger Beer’s Translate Ping Pong project. The idea is to get two artists to pass an art file between them, adding more layers each time.

Ping Pong 1’s theme: “When the world ends…”

Move 1, Loftis:

Move 2, Hsu:

Move 3, Loftis:

Move 4, Hsu:

Move 5, Loftis:

Move 6 and final, Hsu:

Ziua de duminica a fost foarte productiva din punct de vedere sportiv.

Am inceput dis de dimineata cu un tenis in Crangasi, la ora 9. Mi-am dat seama ca sa joc tenis nu e asa de usor precum parea, si ca trebuie sa mai exersez mult ca sa ajung la un nivel cat de cat acceptabil. Antrenorul meu personal spune ca nu il ascult. Adica nu fac ce imi spune el. Ai rabdare, te rog!

Dupa aceea am plecat spre Decathlon, Vali incercand sa ma inveseleasca pentru ca am realizat ca nu ma pricep la niciun sport (cam tarziu!). Acolo ne-am plimbat cu bicicletele prin magazin, am jucat fotbal (nici la asta nu ma pricep), am jucat tenis de masa (cu buletinul poti sa iei o pereche de palete si sa testezi mesele de pingpong pe care le au la vanzare), iar la iesire erau amplasate cosuri de basket, asa ca am batut mingea putin si pe acolo.

Seara, cand am ajuns acasa, Vio m-a intrebat daca am chef de jogging prin Politehnica. Cu gandul la fripturile mancate sambata la aniversarea zilei de nastere a lui Vlad (care by the way este azi, asa ca: “La multi ani!”), am acceptat, desi era tarziu si mai degraba as fi lenevit prin camera.

Recensamantul a fost de 6 tipuri de sport practicate intr-o zi. Yey!

A Therapy? “Troublegum” c. albuma sokáig nem tetszett. Olyan kis slágeres rádiózenének tartottam, vagy nem is tudom. Semmi esetre sem passzolt a Sepulturához, illetve a keményebb vonalhoz, amit akkoriban sokat hallgattam. Aztán ‘94 nyarán egyszer-kétszer Pozsiéknál pingpongoztunk, és mivel ő nagyon rákattant az albumra, egész délután ez szólt… Azóta nekem is tetszik, haha!

Pingback – ein lustiges Wort, das mich ein wenig an Ping Pong erinnert …

… und so falsch liegt dieser Vergleich wohl auch gar nicht. Wikipedia hilft hier mal wieder weiter und natürlich die Kommentare auf Bibliothek2.009.

CC: by-nc-sa by the_amanda

Marble Maze is a labyrinth game that utilizes the orientation sensor built inside some Nokia mobile phones (at least Nokia N95, N95 8GB, and N82). In the game you control a ball inside a labyrinth by tilting the device in your hands. Currently there are 40 different labyrinths to solve, and 3 different balls, a metal ball, a rubber ball, and a super pingpong ball. First fields are easy, but they get harder once you advance. The game requires skill, accuracy, and determination, and is highly addictive. The best time is recorded for each field, so you can also try to break the record once you clear a field.

Download link : Marble Maze

Marble Maze is a labyrinth game that utilizes the orientation sensor built inside some Nokia mobile phones (at least Nokia N95, N95 8GB, and N82). In the game you control a ball inside a labyrinth by tilting the device in your hands. Currently there are 40 different labyrinths to solve, and 3 different balls, a metal ball, a rubber ball, and a super pingpong ball. First fields are easy, but they get harder once you advance. The game requires skill, accuracy, and determination, and is highly addictive. The best time is recorded for each field, so you can also try to break the record once you clear a field.

Download link : Marble Maze

Sakka: Alright old woman, it’s my turn for you to read my future.

Fortuneteller: You’ll have countless sufferings and misfortunes.

Sakka: Oh yeah? How would you know, you haven’t seen my palms yet!

Fortuneteller: I don’t have to look at your dirty palms. The way I looked at you is enough. You’ll be mostly into troubles and pain, ninety percent of it will be self-inflicted.

Sakka: I told you guys it was a mistake being here with this old woman.

I got this conversation in an animated series I’ve watched before. Well, it’s just a thought that came into me when I was thinking and thinking about this certain thing boggling me.

She sent a group message that is a quote. Really, there’s nothing special about it. I replied with her name, an exclamation point, and a smiley trying to catch her attention and maybe start a conversation. She replied “hi” with my full name (She enjoys calling me that way since my first name which I didn’t use sounds cheesy) next to it and a smiley.”how are you?” I asked. “I’m good! I’m on my way home from a date. My boyfriend and I dated.” She replied. “Oh ok. I’m sorry. Arrive home safely. Take care.” I replied for the last time. “Ok. Thank you [my first name] hahaha!“

Everything should be fine but what I feel is not. Why on earth am I jealous with her boyfriend? I mean, I’m not in the position to do so and it’s so funny that someone got jealous of a certain subject that is in the first place, not his. Even if i could do something about it, circumstances won’t let me because the fact is, I am but a friend and not a boyfriend.

The reality is no one is responsible of my hurt. It’s not my friend or the guy, it is me. The pain is self-inflicted and is fanned to flame by wrong interpretations of kind friendship she’s giving me. (I admit, I’m putting much of different meanings into it LOL) I knew from the start that she had a boyfriend. That’s why I’ve marked a line of where I should place my foot on and where I should not. But when I’ve seen the two sides that the line divides, a part of me wants to jump on to the other side but my whole self established a limit and would stick to it.

The truth is, I entertained all this emotional chaos in me. I know things from the start and yet, I still want a tip-toe dip of how cold the river will be. We almost had a habit of texting each other every night and chat about things. We also had silly names to call each other, we shared stories and personal matters, and almost everything that bind us together. The whole thing is normal in a friendship but I love giving it other definitions and let my ears clap about it.

I know I am a good friend for her. I know she thought of me as a nice person and a funny guy. I know she value me because I’m not an ordinary friend she had. She cares or me, she thinks of me, she texts me, and ask if I’m doing good, because.. I am her FRIEND. Don’t you think it’s nice to have a friend that you like and give other meanings to things she does for you? LOL!! kidding!

Actually, I’ve broke up with my girlfriend for weeks now. (Not because of her or anyone else) I’ve realized, I need first to be matured enough before I take a 75 unit romantic-relationship-responsibility to add to my academic subjects at school so I can manage it effectively without copromising others. So the whole thing about my friend that I am liking was just an illusion. Illusive of things that even if I had the chance to have, I still won’t and I’ve made a promise to myself to prioritize things first to my family, school, church, and to God most importantly, and least would be my love-life.

It is self-inflicted and It’s me that can help myself to get through this. But I am buried in a sand that felt good to me so I think I’ll gonna stay here for a while enjoying the agony. Besides there’s no one now to seriously got jealous for. Hey! I’ll be missing heartaches and all that lovey-love-love stuffs and emoticuty-chubi feelings a boyfriend-girlfriend had so let me pass on this one. LOL

Self-inflicted it may be, but pain in this level are manageable and easy get over with. It can be painful but I found ways on how I could enjoy it and turn it into something myself could enjoy heartbreak music and relate to it somehow. LOL!!

Hier ist die Lösung! Besonders, wenn auch das Wohnzimmer zu klein ist:

Ich finds klasse, aber gebaut ist es wohl noch nicht. Yankodesign hat das ausgegraben, die Idee hatte Tobias Fränzel.

More ambitious than simply showing that a group is infinite is to show that it contains an infinite subgroup of a certain kind. One of the most important kinds of subgroup to study are free groups. Hence, one is interested in the question:

Question: When does a group contain a (nonabelian) free subgroup?

Again, one can (and does) ask this question both about a specific group, and about certain classes of groups, or for a typical (in some sense) group from some given family.

Example: If is a property of groups that is inherited by subgroups, then if no free group satisfies , no group that satisfies can contain a free subgroup. An important property of this kind is amenability. A (discrete) group is amenable if it admits an invariant mean; that is, if there is a linear map (i.e. a way to define the average of a bounded function over ) satisfying three basic properties:

1. if (i.e. the average of a non-negative function is non-negative)
2. where is the constant function taking the value everywhere on (i.e. the average of the constant function is normalized to be )
3. for every and , where (i.e. the mean is invariant under the obvious action of on )

If is a subgroup of , there are (many) -invariant homomorphisms taking non-negative functions to non-negative functions, and to ; for example, the (left) action of on breaks up into a collection of copies of acting on itself, right-multiplied by a collection of right coset representatives. After choosing such a choice of representatives , one for each coset , we can define . Composing with shows that every subgroup of an amenable group is amenable (this is harder to see in the “geometric” definition of amenable groups in terms of Folner sets). On the other hand, as is well-known, a nonabelian free group is not amenable. Hence, amenable groups do not contain nonabelian free subgroups.

The usual way to see that a nonabelian free group is not amenable is to observe that it contains enough disjoint “copies” of big subsets. For concreteness, let denote the free group on two generators , and write their inverses as . Let denote the set of reduced words that start with either or , and let denote the indicator functions of respectively. We suppose that is amenable, and derive a contradiction. Note that , so . Let denote the set of reduced words that start with one of the strings , and let denote the indicator function of . Notice that is made of two disjoint copies of each of . So on the one hand, , but on the other hand, .

Conversely, the usual way to show that a group is amenable is to use the Folner condition. Suppose that is finitely generated by some subset , and let denote the Cayley graph of (so that is a homogeneous locally finite graph). Suppose one can find finite subsets of vertices so that (here means the number of vertices in , and   means the number of vertices in that share an edge with ). Since the “boundary” of is small compared to , averaging a bounded function over is an “almost invariant” mean; a weak limit (in the dual space to ) is an invariant mean. Examples of amenable groups include

1. Finite groups
2. Abelian groups
3. Unions and extensions of amenable groups
4. Groups of subexponential growth

and many others. For instance, virtually solvable groups (i.e. groups containing a solvable subgroup with finite index) are amenable.

Example: No amenable group can contain a nonabelian free subgroup. The von Neumann conjecture asked whether the converse was true. This conjecture was disproved by Olshanskii. Subsequently, Adyan showed that the infinite free Burnside groups are not amenable. These are groups with generators, and subject only to the relations that the th power of every element is trivial. When is odd and at least , these groups are infinite and nonamenable. Since they are torsion groups, they do not even contain a copy of , let alone a nonabelian free group!

Example: The Burnside groups are examples of groups that obey a law; i.e. there is a word in finitely many free variables, such that for every choice of . For example, an abelian group satisfies the law . Evidently, a group that obeys a law does not contain a nonabelian free subgroup. However, there are examples of groups which do not obey a law, but which also do not contain any nonabelian free subgroup. An example is the classical Thompson’s group , which is the group of orientation-preserving piecewise-linear homeomorphisms of with finitely many breakpoints at dyadic rationals (i.e. points of the form for integers ) and with slopes integral powers of . To see that this group does not obey a law, one can show (quite easily) that in fact is dense (in the topology) in the group of all orientation-preserving homeomorphisms of the interval. This latter group contains nonabelian free groups; by approximating the generators of such a group arbitrarily closely, one obtains pairs of elements in that do not satisfy any identity of length shorter than any given constant. On the other hand, a famous theorem of Brin-Squier says that does not contain any nonabelian free subgroup. In fact, the entire group does not contain any nonabelian free subgroup. A short proof of this fact can be found in my paper as a corollary of the fact that every subgroup of has vanishing stable commutator length; since stable commutator length is nonvanishing in nonabelian free groups, this shows that there are no such subgroups of . (Incidentally, and complementarily, there is a very short proof that stable commutator length vanishes on any group that obeys a law; we will give this proof in a subsequent post).

Example: If surjects onto , and contains a free subgroup , then there is a section from to (by freeness), and therefore contains a free subgroup.

Example: The most useful way to show that contains a nonabelian free subgroup is to find a suitable action of on some space . The following is known as Klein’s ping-pong lemma. Suppose one can find disjoint subsets and of , and elements so that , , and similarly interchanging the roles of and . If is a reduced word in , one can follow the trajectory of a point under the orbit of subwords of to verify that is nontrivial. The most common way to apply this in practice is when act on with source-sink dynamics; i.e. the element has two fixed points so that every other point converges to under positive powers of , and to under negative powers of . Similarly, has two fixed points with similar dynamics. If the points are disjoint, and is compact, one can take any small open neighborhoods of , and then sufficiently large powers of and will satisfy the hypotheses of ping-pong.

Example: Every hyperbolic group acts on its Gromov boundary . This boundary is the set of equivalence classes of quasigeodesic rays in (the Cayley graph of) , where two rays are equivalent if they are a finite Hausdorff distance apart. Non-torsion elements act on the boundary with source-sink dynamics. Consequently, every pair of non-torsion elements in a hyperbolic group either generate a virtually cyclic group, or have powers that generate a nonabelian free group.

It is striking to see how easy it is to construct nonabelian free subgroups of a hyperbolic group, and how difficult to construct closed surface subgroups. We will return to the example of hyperbolic groups in a future post.

Example: The Tits alternative says that any linear group (i.e. any subgroup of for some ) either contains a nonabelian free subgroup, or is virtually solvable (and therefore amenable). This can be derived from ping-pong, where is made to act on certain spaces derived from the linear action (e.g. locally symmetric spaces compactified in certain ways, and buildings associated to discrete valuations on the ring of entries of matrix elements of ). 

Example: There is a Tits alternative for subgroups of other kinds of groups, for example mapping class groups, as shown by Ivanov and McCarthy. The mapping class group (of a surface) acts on the Thurston boundary of Teichmuller space. Every subgroup of the mapping class group either contains a nonabelian free subgroup, or is virtually abelian. Roughly speaking, either elements move points in the boundary with enough dynamics to be able to do ping-pong, or else the action is “localized” in a train-track chart, and one obtains a linear representation of the group (enough to apply the ordinary Tits alternative). Virtually solvable subgroups of mapping class groups are virtually abelian.

Example: A similar Tits alternative holds for . This was shown by Bestvina-Feighn-Handel in these three papers (the third paper shows that solvable subgroups are virtually abelian, thus emphasizing the parallels with mapping class groups).

Example: If is a finitely generated group of homeomorphisms of , then there is a kind of Tits alternative, first proposed by Ghys, and proved by Margulis: either preserves a probability measure on (which might be singular), or it contains a nonabelian free subgroup. To see this, first note that either has a finite orbit (which supports an invariant probability measure) or the action is semi-conjugate to a minimal action (one with all orbits dense). In the second case, the proof depends on understanding the centralizer of the group action: either the centralizer is infinite, in which case the group is conjugate to a group of rotations, or it is finite cyclic, and one obtains an action of on a “smaller” circle, by quotienting out by the centralizer. So one may assume the action is minimal with trivial centralizer. In this case, one shows that the action has the property that for any nonempty intervals in , there is some with ; i.e. any interval may be put inside any other interval by some element of the group. For such an action, it is very easy to do ping-pong. Incidentally, a minor variation on this result, and with essentially this argument, was established by Thurston in the context of uniform foliations of -manifolds before Ghys proposed his question.

Example: If is an (algebraic) family of representations of a (countable) free group into an algebraic group, then either some element is in the kernel of every , or the set of faithful representations is “generic”, i.e. the intersection of countably many open dense sets. This is because the set of representations for which a given element is in the kernel is Zariski closed, and therefore its complement is open and either empty or dense (one must add suitable hypotheses or conditions to the above to make it rigorous).

Ser Joshua Lagrimas [Week4 Part2]

Grabe,  parang may hangover pa rin ako sa naganap na Code Review nung isang araw. Nahigop niya talaga lahat ng lakas ko. Pero ang katapusan ng Code Review na ito ay isa ring senyales na simula na naman kami sa regular na pagtuturo sa Java Boot Camp. Patagal ng patagal napapansin kong mas komportable na kami sa isa’t isa. Kahit yung mga nagtuturo sa min, kahit paiba-iba, ewan ko ba, mas wala ng tensyon di gaya nung mga nakaraang araw.

Ngayon naman at nagsimula na kami sa Ikalawang Module, tinuturuan naman kami ng Web Development. Sa kinasamaang-palad, hindi kasama sa kurikulum ng Departamento ng Computer Science ni isang Web Development na asignatura. Ito ako ngayon takot na takot gumawa lang ng simpleng “tag”. May payak na kaalaman ako sa HTML pero hindi siya sapat para bigyan ako ng lakas ng loob para gumamit at gumawa ng isang simpleng pahina sa Web.

Habang naglalaro ang mga tao sa labas ng Pingpong, sayang-saya naman kaming mga Dev trainees sa pakikinig ng turo, kung nakikinig nga. (Kayo na lang ang humusga.)

habang "nakikinig" sa lecture sa harap..

Ang saya noh?XD Ganyan kami lagi sa loob ng training room. Araw-araw, oras-oras at minu-minuto.

Ayun nga, kaya nga ako nag-blog kasi ibabahagi ko sana ang isa sa mga tinuro sa min mula sa Ikalawang Module, ang JSP (JavaServer Pages) at JSTL (JavaServer Pages Standard Tag Library). Ilan ito sa mga teknolohiyang pwede nating magamit sa paggawa ng “V” sa M-V-C, ang “View”.

Ang JSP kasi ay isang teknolohiya sa Java na binibigyang kapangyarihan ang mga developers na lagyan ng code ng Java yung mismong web page file. Ito rin ay nagdadagdag ng tag libraries na nagsisilbing palugit ng pangunahing XML (Extensible Markup Language) at HTML (HyperText Markup Language) tags.

Sa JSP, tinuruan kami ng:

• Declarations
• Expressions
• Scriptlets
• Comments
• Directives
• Actions
• Implicit JSP Objects
• Error Pages
• JavaBean

Nakakatawa kasi habang nasa loob kami bawat pagkakataon na lumalabas ako para mag-CR, nakikita kong naglalaro ng Pingpong yung mga tao sa labas. At ang nakakagulat pa nito, mismo sina Sir Joel at Sir Butch pa yung naglalaro.

Sir Joel at Sir Butch naglalaban..

Ayun kaya pagbalik ko mula sa CR, tinuturuan na kaming mag-JSTL. Ano nga ba ang isang JSP Tag? Katulad lang siya ng isang HTML Tag pero dito may mga dagdag na functionalities na hindi kayang gawin ng isang regular na tag.  Halimbawa na lang ng mga kayang gawin sa JSP Tag ay mga simpleng pagse-set at pagtatanggal ng variables, paggamit ng EL (Expression Language), Conditionals (if-else), Iterators (forEach), etc. Marami pa siyempre pero sa tingin ko sapat na yan para mailarawan anung meron sa JSTL.

Actually, pwede rin kaming maglaro sana ng Pingpong nung araw na yun pero siyempre di pwede kasi may lecture. 

si Thea representative ng interns.. go Thea!

Nakakainggit nga PMBA interns eh kasi laro lang sila ng laro habang kaming mga Dev busyng-busy. (Hindi naman halatang bitter noh?)

PS

Nang sumunod na araw, nasubukan kong maglaro ng Pingpong. Ayun, natuklasan ko lang kung gaano ako ka-bobo maglaro. Grabe, walang kontrol sa pagpalo at walang direksyon. Hay.

Mira lo que hacen estos chicos con pelotas de ping pong.

Topspin z forhendu jest poza zbiciem najbardziej dynamicznym i silnym zagraniem w tenisie stołowym. Kiedy jest wykonywany poprawnie może być podstawą Twojej gry. Kluczem do nauki topspinu z forhendu jest porównanie go do podobnych zagrań w innych sportach. Może to brzmieć zabawnie dla profesjonalnego gracza, ale takie porównania mają swoje uzasadnienie.

Jeśli o topspinie będziesz myślał tylko w kategoriach zagrania pingpongowego to może ci się wydawać, że podstawą tego zagrania jest ruch ręką. Nic bardziej mylnego. Poprawny topspin wymaga zaangażowania całego ciała.  Pod tym względem jest on podobny do forhendu w tenisie ziemnym, uderzenia bejsbolowego czy golfowego.

Wyobraź sobie bejsbolistów (np. Marka McGuire’a czy Ken’a Griffeya – to ci bardziej znani . Czy mogliby tak daleko uderzać piłkę gdyby nie wprawiali w ruch całego swojego ciała, poczynając od nóg, tułowia i mięśni brzucha? Wyobraź sobie perfekcyjne zagranie Tigera Woodsa. Czy byłoby ono możliwe bez przenoszenia ciężaru z jednej nogi na drugą? Wyobraź sobie forhend Andre Agassiego. Czy byłoby to takie wspaniałe zagranie gdyby nie podchodził nisko pod piłkę? Na wszystkie pytania odpowiedź brzmi „nie”. Powinno dać ci to do myślenia kiedy będziesz uczył się tego zagrania.

Najbardziej istotne w topspinie jest energiczne przeniesienie ciężaru ciała z prawej nogi na lewą (dla graczy leworęcznych – odwrotnie). Jest to równorzędne z decyzją o nadaniu piłeczce większej szybkości lub rotacji. Jeśli zależy ci na większej rotacji ruch ręką musi iść bardziej w górę. Kontakt rakietki z piłeczką musi być możliwie krótki. Aby uzyskać więcej szybkości przenosisz ciężar ciała bardziej w górę. Kontakt piłeczki z rakietką jest dłuższy.

Topspin na zagrania podcięte (z rotacją wsteczną)

Aby zagrać topspin przeciw zagraniu podciętemu musisz zrobić krok w kierunku piłki, następnie przyjąć odpowiednią pozycję (patrz foto), zrobić skręt tułowia i następnie energicznie wykonać uderzenie przenosząc ciężar ciała na lewą nogę. Podczas zagrania prawa noga powinna być lekko wysunięta do tyłu, a ciało skręcone ok. 45 st. w stosunku do blatu stołu. Jeśli masz więcej czasu na zagranie możesz zrobić większe wychylenie. W dzisiejszym tenisie stołowym zawodnicy nie mają już tyle czasu na pełne zagranie ciałem, jednak nie powinno się o tym zapominać, gdyż sam ruch ręką może wypaczyć całe uderzenie. Pamiętaj, że przy zagraniach powinieneś maksymalnie rozluźnić ramię i rękę.

Podczas zagrania topspinu tułów i ramię wykonuje obszerniejszy skręt niż nogi. Piłkę należy zagrywać kiedy jest w najwyższym punkcie lub kiedy jest opadająca, w zależności od tego czy chcemy uzyskać większą rotację lub szybkość uderzenia. Zagranie powinno kończyć się na wysokości głowy lub w górnej części klatki piersiowej. Ważna jest również pozycja głowy. W początkowej fazie powinna być pochylona w stosunku do stołu, a w momencie kończenia uderzenia powinna być wychylona do góry. Ważne jest aby mieć kontakt wzrokowy z piłeczką. Przed i po zagraniu głowa powinna podążać za torem lotu piłeczki.

Kiedy już opanujesz grę topspinem z forhendu powinieneś skupić się na urozmaicaniu swojej rotacji. Z czasem przekonasz się, że wcale nie takie trudne jest zagrywanie topspinów z rotacją boczną (sidespinów) czy tzw. fast-spinów (silnych topsinów pozbawionych niemal rotacji). To jest jednak temat na inny artykuł…

Opracowanie: blu, Sean Lonergan