Cardinals placed RHP Jake Westbrook on the 15-day disabled list, retroactive to May 9, with a right elbow inflammation. Westbrook has been given an injection in hopes that it will calm things down. It's not clear if he's already undergone an MRI or if that's yet to come. John Gast will take Westbrook's spot in the rotation starting Tuesday, but Carlos Martinez or Michael Wacha might be options eventually if the veteran is out for a while.