I thought we could have some fun and channel a little Jeff Foxworthy. To lead it off and see where it goes.
Your prospect might be in trouble when: he is deemed to be the next Tom Glavine - and he's a hitter.
(More seriously: your hitting prospect might be in trouble when he's compared to Andy Van Slyke (serious Kiss of Death))
Your prospect might be in trouble when his worst off the field moment was better than his worst on the field moment (I'm looking at you Delmon)...