35. Bruce Ruffin (Rockies career WAR: 6.8)
Bruce was a high-round reclamation project that went from below average to All-Star level after being moved from the rotation to the bullpen. The only above-average season he had as a starter was his rookie year with the Phillies. He tried one last time in 1993, his first year in Denver, and failed to stick in the rotation.
From 1994-1997 though, he was one of the most valuable bullpen arms at Don Baylor’s disposal. His career year came in 1996 where he won 7 games, saved 24 games, and racked up 79 strikeouts in 69.1 IP for an ERA+ of 130 and 3.23 FIP showing that 4.00 ERA was quite a bit unlucky.