A.J. Puk is set to be one of the most important relievers for the Arizona Diamondbacks this year. Whether or not he will be a closer, Puk is arguably the most crucial arm in the bullpen for the team.

Puk's career numbers include four starts in which he gave up 14 earned runs in 13.2 innings. In his 200 career games as a reliever he has a 3.16 ERA and 3.16 FIP, almost .40 runs lower than his ...

A.J. Puk is set to be one of the most important relievers for the Arizona Diamondbacks this year. Whether or not he will be a closer, Puk is arguably the most crucial arm in the bullpen for the team.