The Arizona Diamondbacks are reportedly bolstering the backend of their bullpen ahead of Tuesday's trade deadline.
According to ESPN's Jeff Passan, the National League West team is in the process of finalizing the acquisition of Seattle Mariners closer Paul Sewald. Nick Piecoro of the Arizona Republic reported the Mariners will receive outfielder Dominic Canzone, infielder Josh Rojas and shortstop Ryan Bliss in the deal.
Canzone was the Diamondbacks' No. 19 overall prospect, while Bliss was the organization's No. 29 prospect, per MLB.com's rankings.
Rojas has been a regular for Arizona during the last three seasons and is slashing .