QUOTE (Balta1701 @ Apr 22, 2012 -> 10:33 PM)
Pitch F/X doesn't help as much with that, but usually...if a guy has lost 2 mph on his fastball, whatever reason he's down on that, it's going to affect his control too. Start overthrowing things, lose something in the delivery, start relying on different pitches, whatever.
Most important thing in my opinion is the lack of difference in velocity between fastball and change-up.