If and when Chris Carpenter returns, the question would be where to move Oswalt in the rotation.
It is a clear cut answer in my mind.
Bump Jake Westbrook out and slide Kyle Lohse to No. 5 in the rotation.
Westbrook is a soft tossing vet who hasn't had good stuff since his arrival in St. Louis. Westbrook would make an excellent middle reliever as he would be a nice change of pace pitcher following the likes of Wainwright, Carpenter and Garcia.
A rotation of Carpenter, Wainwright, Garcia, Oswalt and Lohse has the capability to be the best in the National League if not the entire MLB.