PHOENIX -- The Diamondbacks have called up infielder Didi Gregorius from Triple-A Reno and placed infielder Cliff Pennington on the 15-day disabled list with a sprained ligament in his left thumb.
Manager Kirk Gibson said Pennington has a torn ligament in his left thumb that will require surgery. The infielder is expected to be out for six to eight weeks.
Gregorius, the D-backs' starting shortstop for most of the 2013 season, was sent to Reno after being beaten out for the starting job by Chris Owings during spring training. He was hitting .310 with 14 doubles, four triples, 25 RBI and 42 runs scored in 57 games while splitting his time between second base (38 games) and shortstop (19). He was batting .373 over his last 15 games.
Gregorius has 381 major league at-bats in parts of three seasons and has a .252 career average with 16 doubles, seven home runs, 30 RBI and 48 runs scores. He was acquired by the D-backs prior to the 2013 season in a trade that sent Trevor Bauer to Cleveland.
Pennington suffered his injury during a tag attempt of San Diego's Everth Cabrera in the first inning on May 27. He has a .243 average in 33 games.
On Monday, outfielder A.J. Pollock underwent surgery to repair a fractured right hand. He is expected to he out at least two months.
