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Old 06-23-2019, 03:23 AM   #274
Brian Swartz
Grizzled Veteran
 
Join Date: May 2006
Serve is more effective on grass by a small amount, less so on clay.

As for the numbers, a combination of the documentation and analyzing the results of matches between three high-level players that played a lot; Iglar, Mehul, and somebody else. That should be near where the numbers were given. Anyway, we know the basics are skill + serve (of the server), vs. skill of the returner for any given point. Serve is only used in half the points but it slightly more important than that because of aces. Strength is explicitly stated to be added directly to skill and to be 20% of the value, so that's in there. Speed affects the returners ability to combat the serve, which really just leaves mentality and that's based on how players with high/low mentality were doing in BPs on the aggregate over dozens of matches compared to their overall showing in how many points they won. It's an imperfect estimate to be sure, but I think it's a pretty good one.

Last edited by Brian Swartz : 06-23-2019 at 03:25 AM.
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