This problem has been augmented by the new update's shanks when you only catch a piece of the ball. I think those shanks and whenever you hit a shot too early because it's too deep should be counted as forced errors instead of unforced errors.
2010 Singles: 66-10 (no wo (4))
2010 Doubles: 21-11
2009 Singles: 105-14 (no WO (6))
2009 Doubles: 11-8
'10: W: AO, Miami, Casa, Barca, Rome, Stuttgart, Hamburg, Cincy
'09: W: 13 including Rome, Madrid, RG, Wimby, Cincy, USO