Bench stud
(n): Player on a fantasy sports team of any kind who will do terribly when you have him in your lineup but will overperform when placed on your bench
Person 1: What?? What do you mean Aubrey Huff had 3 home runs tonight, I just benched him!
Person 2: Not your fault man, he's just a bench stud
Person 2: Not your fault man, he's just a bench stud