I just watched a little of the Stella Artois Championships this year. But what was obvious to me is, most players don't feel comfortable at all, playing on the grass. Pushing/chipping balls back (especially on returns), slicing too many backhands. It seems as if the players are affraid to really attack and play at full intensity. There are very few good rallies from the baseline, where both players are really bashing the ball. I think if it wasn't for wimbledon, most players wouldn't even wanna play on grass. That's what it seems to me.