Re: Why winning IW is a good precursor of USO performance?
The US Open has gotten slower and slower and slower to the point that it has surpassed Indian Wells.
Serving stats from ATP don't support that theory. According to it, US Open plays pretty much the same for last 15 years. Any significant change in environment would move the numbers in either direction, just like in Australian Open's case where they decided to speed things up a bit recently and players are consistently winning around 3 % more points on first serve compared to early Plexicushion years (2008+).