One of the top high-school pitchers available in 2007, Smoker unexpectedly slipped to the supplemental round, where he was gobbled up by the Nationals. His long arm and easy, slinging action let him throw a low to mid-90's fastball with the same apparent motion as his slider, splitter and change. The net result of all that? Filthy.

Just 18 when he was drafted, Smoker looked overmatched in A-ball in 2010, but bounced back to form last season, with 56 strikeouts in 51 high-A innings at high-A Potomac. Smoker is still a year or two away from truly ready, but if he stays healthy he could be something special. In fact, the entire Nats bullpen could be really, really good in a couple of years.