Originally Posted by philosophicalarf
Interesting. Don't have time to look at it much, but that second serve win% difference is off-the-charts enormous. You wouldn't see anywhere close to that nowadays at any tournament - hard courts they go from Doha at 49.7%, to Cinci at 52.3%. Clay goes from 47.4% at Umag, to 52.0% at Gstaad. Grass from 51.0% (Newport) to 51.9% (Queens), and indoors from 49.7% (Valencia) to 52.8% (Basel).
What I'd probably want to do with those figures is filter out claycourt specialists from the 94 figures, since they likely spoil the serve stats more than in recent years (doesn't take many guys winning 21% of second serve points to drag down the average).
Indeed -- the difference in means between the two years' second serve points won stat is amazing. I knew that it was going to be under 50% and probably less than 47% for Wimbledon 1994, but I didn't know it would go down to 43.8%. As I entered the numbers, I saw that very few players won 50% of their second serve points in 1994 and most of those players did so in 3 set matches -- the longer the match went on, the lower % of second serve points were won. Serving and volleying on second serves, unless you had a great second serve and athleticism, was a losing proposition.
You read my mind, philosophicalarf. When I have the time, I can put up serve stats for say the top 10 servers in each year. I can also run a t-test for Rd of 32 and afterwards which would presumably leave us with players suited to play on the surface with the technology available at the time.