@metsman and
@Gary Duane what do you think of the "bump/jump" phenomena on clay
-Nadal bumps up from 53.6% to 56.9% in 2005.
-Thiem bumps up from 53.3% to 56.1% in 2017.
-Djoko bumps up to 57.0% in 2008 (start of his clay prime except for his health issues disrupting.)
-Federer bumps to 54.8% in 2003
-Bruguera jumps to 56.9% in 1993
-Courier jumps to 56.4% in 1992
-Kuerten bumps in 2000, but not a big bump.
(Maybe he had ranking to play a lot off clay)
-Muster never really bumps, but he had car wreck and we don't have data before age 24, hold on.... Muster in 1987 won 54.2% of his game and then went to 61.8% in 1988
. Using Gary's back calculation for points that's probably like 52.0% jumping to 55.5% in 1988. It's a bump.
(SF at Auz in 1989 and then the car wreck.
)
-Coria with the biggest bump in 2003
-Ferrero bumps 2001 (metsman objections aside, honestly with Thiem his clay level was great late in 2016 season and 2017 a continuation of sorts)
-Ferrer bumps at age 25 in 2007.
(Not sure why his 2008 and 2009 levels much lower, anyone?)
-Agassi..... looking at his games, good lord went from 50% in 1987 to 61.3% on games. 50.0% points to 55.0% in one year
-Chang..... 51.1% in 1988 to 58.4% in 1989 which is 50.5% to 54.0%
Everybody has this big bump. Sometimes you see this on hard courts, but Courier had a steady climb, Nadal, Murray. It's a consistent thing on clay. I'm not sure what this says about the nature of the clay game except that maybe the physical nature of clay and the lesser importance of serve and return makes these kind of jumps possible as a great player starts to dominate off the ground.
Its interesting that Federer had one of the smaller bumps and it was more steady improvement in his clay game for a few years after the bump to take him to his best level. Zverev has not bumped despite some nice escalation of some of his serve stats. I wonder if this is because he's never really dominating off the ground and is more serve reliant. Will Zverev have a big bump in the next year or so? Or will he be like Fed? Interesting as I just checked Soderling and he had no big games bump.
Maybe Thiem will be safe on clay.