CINCINNATI -- The D-backs recalled left-handed pitcher Matt Reynolds from Triple-A Reno on Sunday and optioned left-hander Keith Hessler to Reno.
Reynolds will return to the Major Leagues for the first time since undergoing Tommy John surgery. He missed all of last season and last pitched on June 9, 2013 against the Giants.
After relying on the bullpen for a substantial amount of innings during the series -- including 6 2/3 innings in Saturday night's 11-7 win over the Reds -- D-backs manager Chip Hale said a move was needed to bring up a fresh arm.