Onc could even argue that grass has the potential to be Felix's best surface. He already has a big serve that is only going to get more formidable as he puts on a little weight; he has the makings for a fine volley game, and he seems at ease at the net. As well, he can move his opponent around which creates errors on the slippery surface. Most noteworthy, though, is he has very compact groundstrokes, a huge plus on grass where the ball comes in very quickly. He has the reflexes of a mongoose, the results of which will take big chunks out of his opponent's reaction time, another benefit that gets accentuated on grass. In his first professional grass match, despite the fact that he looked like he was walking on egg shells early in the first set, Felix acquitted himself very well against Gulbis who has some very big wins on grass to his credit.