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  1. J

    sooo, the way I read it the courts at 2021 AO are _not_ per ITF regulations.

    Here are 2021 ITF regulations: section 1 The Court: " No advertising is allowed on the court, net, strap, band, net posts or singles sticks except as provided in Appendix IV. " and Appendix IV: " [paragraphs 1, 2, and 3 talk about what kind of advertising is allowed. And then Paragraph 4...
  2. J

    A practical simulation of a tennis serve trajectory

    Since we are still in that pandemic times, with a bit too much time on hand.... Between those famous frame-counting method of approximating serve speed, and various apps that measure such speed I got interested in physics and math behind it. Behind the tennis serve trajectory itself that is...
  3. J

    ITA Indoor at Illinois Campus

    Does anyone know if the public will be allowed to watch ITA Indoor Championships this coming February?
  4. J

    Home made swingweight machine emulating Babolat RDC/Prince PTC - a fully working one. Total cost roughly $10...

    So that whole pandemic lock-down, free time, and curiosity made me think about building a swingweight machine. Originally I just wanted to emulate RDC frame stiffness measurement - but once that was done I was sort of unsatisfied on multiple levels. First - it was too easy to make :). Second...
  5. J

    Palo Alto area the weekend of 01/31

    I'll be in Palo Alto area the weekend of 01/31. Anyone decent willing to hit? (I know, I have @MaxTennis covered already :) ) pinging @ReopeningWed, @Jakesteroni,
  6. J

    Looking for anyone that owns Babolat RDC machine..

    I'm looking to find out the details on how RDC machine works to measure racket flex, and string stringbed stiffness. I understand the concept, I've seen the videos. But I want to know if : Does the machine try to flex the racket/strings certain distance and it measures how much force it takes to...
  7. J

    Tennis in Playa del Carmen 12/31-01/07

    I'll be in Playa del Carmen area 12/31-01/07. Anyone interested in some tennis? Or any recommendation for tennis clubs in that area?
  8. J

    What level are these players?

    A friend of mine asked me to perform semi-scientific poll on what level he might be. Here's a video (yes, unedited, a lot of dead time). He promised to provide more footage but enjoy for now. Edit: another video added Edit: third clip added, after players switched sides.
  9. J

    Palo Alto 09/06-09/08

    I'll be in Palo Alto area next weekend 09/06-09/08. Looking for a decent player to hit around Standford area.
  10. J

    Los Angeles 08/19-08/22

    I'll be in LA 08/19 - 08/22. Realistically I can probably hit Monday, Tuesday, or Wednesday, more likely afternoon/evening. Looking for a decent player to hit with.
  11. J

    Tennis Maui 08/06 - 08/14

    I'll be in Maui, looking for a decent player to hit.
  12. J

    anyone with insight about various colleges

    asking for a friend. not really tennis related but since there are quite a few folks here.... Imagine one got accepted into Berkeley, Georgetown, Michigan, Northwestern, Vanderbilt, UCLA, USC. Non-athlete, humanities major (i.e. non engineering, non CS, non Business), female from a major us...
  13. J

    potatoo is an excellent buyer

    great communication, prompt decision, very quick payment, no problems at all. Thanks for the transaction. @potatoo
  14. J

    FS/FT Rackets Head Graphene Speed

    Few rackets for sale/trade. I would consider trade for Yonex VCore Pro 97 310gr. Item Description (Brand/Model/Year): Head Graphene Speed MP Grip Size / Size: 4 3/8 Quantity: 1 Head Size (if a racquet): 98sq Condition (x out of 10): 8.5 *Specific Time Used (must give specific time, must be over...
  15. J

    FS/FT Rackets Head Wilson Yonex

    Few rackets for sale/trade. I would consider trade for Yonex VCore Pro 97 310gr. Item Description (Brand/Model/Year): Head Radical MP Youtek Innegra Grip Size / Size: 4 3/8 Quantity: 1 Head Size (if a racquet): 98sq Condition (x out of 10): 9.5 *Specific Time Used (must give specific time, must...
  16. J

    FS/FT Rackets Yonex Duel G

    Few rackets for sale/trade. I would consider trade for Yonex VCore Pro 97 310gr. Item Description (Brand/Model/Year): Yonex Duel G 300gr Grip Size / Size: 4 1/8 Quantity: 1 Head Size (if a racquet): 100sq Condition (x out of 10): 9.0 *Specific Time Used (must give specific time, must be over 30...
  17. J

    FS/TR Tennis Shoes Asics Adidas Kswiss Nike

    Item Description (Brand/Model/Year): Asics Gel-Game 5 yellow Grip Size / Size: 10.5 Quantity:1 Head Size (if a racquet): Condition (x out of 10): 9.5/10 *Specific Time Used (must give specific time, must be over 30 minutes): 45 minutes *General Description (including any cosmetic blemishes)...
  18. J

    College Dual Match Format Is The Greatest Thing Ever Invented

    I attend as many college tennis matches as I can. I just spent three days at the ITA Indoor Championships. And I say that whoever came up with the idea of College Dual Tennis Match was/is a genius. There's nothing not to like. The entire thing start to finish takes 2-2.30 hrs. Perfect...
  19. J

    Visiting California 02/21-02/25

    I'll be in Los Angeles 02/21-02/22 and in Palo Alto 02/23-02/25. Anyone I could hit with? Sent from my SM-G950U using Tapatalk
  20. J

    Visiting Palo Alto during Thanksgiving Week

    I'll be in Palo Alto area during the Thanksgiving week. Anyone willing to hit? I'm fairly flexible schedule wise.
  21. J

    So I've Sprayed Some Balls On The West Coast With TTW Posters...

    I was wondering for a while if I ever should detail my West Coast trip - but for the sake of all fellow posters... I was visiting Palo Alto the other weekend and I arranged for some friendly spray. @RajS was kind enough to reply to my post...
  22. J

    Palo Alto area 03.22-03.27

    I'll be in Palo Alto area 03/22-03/27. I'd love to hit during that time. I'm going to have more-less flexible schedule although I prefer afternoons/evenings. I can drive a reasonable distance. As far as level is concerned - I'm fairly decent. Anyone? @RajS, @Yaz, @volleynets, @MarinaHighTennis
  23. J

    Palo Alto area the Thanksgiving weekend

    I'll be visiting in Palo Alto area over the Thanksgiving weekend. Anyone interested to hit? Probably the best chance is Friday afternoon, but perhaps Sunday would work as well. I'm fairly decent, prefer singles. PM me if interested. Sent from my XT1575 using Tapatalk
  24. J

    looking for tennis in Cabo San Lucas

    I'll be visiting Cabo San Lucas over Christmas time. Any options to play/practice tennis there?
  25. J

    looking for a chart with grip bevels dimensions for various brands

    I seem to recall someone made a chart with exact dimensions of all the bevels (sides) for grips (pallets) of all major brands: Yonex, Head, Prince, Wilson. I can't find it now. Anyone has the link?
  26. J

    excellent transaction with psquared

    traded strings: nice negotiation, prompt shipping, item as described.
  27. J

    excellent transaction with WhETHANs

    traded strings: very nice communication, prompt shipping, items as described.
  28. J

    looking for some details on Babolat RDC machine

    Hopefully someone that owns/has access to Babolat RDC machine can help me here: 1) regarding measurement of the flex of the racket. On the RDC machine - what is the distance between the hook that presses the tip of the racket downward and the bar that supports the racket in the middle? 2) what...
  29. J

    what are the strings in old wooden rackets?

    Many old wooden rackets have very similar strings - a if a single colored thread was woven in. Like the strings here: or the crosses here: or this: is that Kevlar?
  30. J

    Etiquette on picking up balls on changeover - I know, First World Problem

    So what is the etiquette on picking up balls on changeover? Like I just completed my service game and there's change of sides, there two balls on my side of the net, and one ball on the other side. Do I pick up balls on my side and leave those at the baseline, and expect the opponent to pick...
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