McCutchen's move was listed as Aug. 4, the day after he left a game at Arizona with pain in his side following a swing. The previous day, he was hit in the same area by a pitch from Diamondbacks reliever Randall Delgado.
The Pirates felt McCutchen was hit in retaliation for Arizona All-Star first baseman Paul Goldschmidt sustaining a season-ending broken left hand a night earlier when hit by Pittsburgh reliever Ernesto Frieri.
McCutchen is batting .311 with 17 home runs and 67 RBIs this season. The reigning NL MVP leads the playoff-contending Pirates in batting average, on-base percentage, homers and RBIs.