Despite having made just two appearances above Double-A, Valdez was summoned to the big leagues in late August and went on to make five starts and three relief appearances for the Astros, finishing with an excellent 2.19 ERA. Although the results were impressive, there are reasons to be skeptical. He was never viewed as a particularly interesting prospect and was thought to be ticketed for a bullpen role, which still seems likely as he threw his third pitch (a changeup) just 1.7% of the time. He walked far too many batters (15.6%) -- another sign of a potential bullpen future -- which contributed to a forgettable 4.65 FIP. An excellent 70.3% groundball rate makes the lefty somewhat interesting, but he's far from a lock as a future starter and would certainly have far less fantasy appeal if he ends up in a long-relief role. Read Past Outlooks