Musgrove (4-7) allowed four runs on seven hits in six innings. He struck out six and walked one.
Pittsburgh utility player Christopher Bostick was acquired by Miami for cash. Bostick, who played in two games for the Pirates this season, was designated for assignment last week.
Pirates: C Francisco Cervelli did not start after getting hit in the facemask by a foul tip in the first inning of Saturday’s game. Cervelli struck out looking as a pinch-hitter in the ninth.
Giants: RHP Hunter Strickland (fractured right hand) began a rehab assignment with Triple-A Sacramento. The reliever is eligible to come off the disabled list Aug. 18.
Pirates: RHP Jameson Taillon (9-8, 3.63 ERA) faces the Twins in Minnesota on Tuesday. Taillon is 5-1 in his previous seven road starts.
Giants: LHP Madison Bumgarner (4-4, 2.69) opposes Clayton Kershaw and the Dodgers in the opener of a three-game series in Los Angeles on Monday. Bumgarner pitched seven scoreless innings against Houston in his most recent start.