The Diamondbacks optioned Groover to Triple-A Reno on Sunday.
After making starts in just one of the Diamondbacks' last seven games, Groover will head back to Triple-A to receive steadier playing time. Arizona recalled utility man Tim Tawa from Triple-A to join the active roster as a replacement for Groover, who slashed .167/.259/.271 with one home run, four RBI and four runs in 15 games during his month-long stay with the big club.