St. Louis Cardinals All-Star second baseman Matt Carpenter has been placed on the 15-day disabled list with a strained right oblique. There's no set timetable for his return.
Rookie shortstop Aledmys Diaz, who is having a breakout season, will replace Carpenter on the All-Star team. Diaz was batting .319 with 12 homers and 44 RBIs.
The Cardinals purchased the contract of catcher Michael McKenry from Triple-A Memphis.
Carpenter, named Tuesday to his third NL All-Star team, is the third St. Louis player in three days to go on the DL, joining Brandon Moss (ankle) and Brayan Pena (knee).