By Dan Harris (FantasyPros), Wednesday, May 27th
Keller's time in the majors last year was . . . sub-optimal, to say the least. Other than his elite strikeout rate, pretty much nothing went right for the youngster in his brief time with the Pirates. But when your FIP is FOUR runs lower than your ERA, chances are pretty good you're due for a rebound. Keller has an excellent fastball with an above-average slider and a decent curveball, more than enough to succeed in getting major league hitters out. If he can manage to limit his awful first innings of games with more consistency, he could provide plenty of value.