John Mozeliak just told Jim Bowden that Jake Westbrook has received a cortisone shot in his throwing elbow. John Gast will be called up to replace him.
Why not Wacha?
I think that Wacha is a part if the future plan and Gast has pitched well and deserves a chance.
After all the hype around the Cardinals rotation something horrible such as this happens. The Cards are fortunate enough to have this kind of depth, and it looks like it will be tested.