Cubs Place Key Pitchers Justin Steele and Jorge López on Injured List

Steele's elbow tendinitis and López's groin strain challenge Chicago's playoff aspirations.

Justin Steele is on the 15-day injured list due to left elbow tendinitis, retroactive to Sunday.
Jorge López has been placed on the 15-day IL with a right groin strain, retroactive to Tuesday.
Steele, a left-hander, leads Cubs starters with a 3.09 ERA over 128 innings this season.
López, a right-hander, has a 2.19 ERA in 22 games since joining the Cubs in June.
The Cubs have recalled right-handers Jack Neely and Trey Wingenter from Triple-A Iowa.