Thirty teams in major league baseball; thirty sources for sleeper potential in fantasy baseball. That's Dalton Del Don's mission here — to identify one fantasy draft sleeper from every squad.
Arizona Diamondbacks: A.J. Puk, SP/RP
Justin Martínez enters the favorite to close in Arizona, but Puk is Arizona’s best reliever who's available later in fantasy drafts. Puk recorded a microscopic 1.72 ERA with a 0.75 WHIP over 57.2 innings after moving to relief last season. His SIERA (2.16) and CSW (33.9%) both ranked top five among relievers. Puk’s K-BB% (30.0) was behind only Mason Miller.