Chris Carpenter has been placed on the minor league disabled list with a strained oblique. Carpenter posted a 2.79 ERA in 10 games earlier this season for the Cubs but also walked seven over 7 2/3 innings. He's been similarly wild at Triple-A Iowa, walking 22 over 28 2/3 frames. The 25-year-old is likely to be back with the big club in September if he can get over the oblique ailment.