Her record in 93 is misleading.
But, then, who knows better? You? Or, Steffi herself?
Here is Steffi on her level of play in 92 and 93:
Q. If you say that you have grown as a player now compared to back to 1988, if you had to pinpoint one specific thing that has changed everything for you, what would you say that is? Would it be the new racket? Would it be the training? What?
STEFFI GRAF: I would say that it started with Heinz. That is what I really have to say. He had a lot of ideas which I wasn't just -- at that moment, I needed a change, I needed a push.
For a couple of years I wasn't working as hard. I didn't do anything different. I just was playing tennis as a routine and he changed that. He made it more difficult, but he just -- he just showed me things that I wasn't shown at that stage. So I would think that he was the biggest change, the best change that I have had.
Q. More difficult, but would you also say he has made it more fun again?
STEFFI GRAF: Well, if I am playing like that all day, yeah, he has made it more fun. Maybe the training sometimes is not as much fun.
If you are doing things that maybe you are not as good and you have to do them, it is difficult for me, but I know the result will show and I just need some time for it. I have a lot of trust in him. That is why I am just doing these things.
--- Presser, Miami (Lipton), March 15, 1994
http://www.asapsports.com/show_interview.php?id=19173