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.

Arizona is acquiring A.J. Puk from the Marlins for two prospects: corner infielder Deyvison De Los Santos and center fielder Andrew Pintar. The D-backs have a full 40-man roster and will ...

This is article is part of a series reviewing the projections for each member of the Arizona Diamondbacks 40-man roster ... runs and WAR can be updated. Puk's career numbers include four starts ...