Looking at Finnegan since May 1: 2.70 ERA / 3.58 FIP. Seems he's been helped by good defense. He has only allowed runs in 3 of 16 appearances. I would think he'll be of value as a bullpen piece for a contender.
Harvey is the reverse: 3.63 ERA / 3.22 FIP. Runs allowed in 2 of 16 appearances.