Amazing. There is no other way to describe the return of St. Louis Cardinals ace Chris Carpenter to the mound just two months after undergoing major surgery. Carpenter is making his season debut this afternoon at Wrigley Field as the Cardinals visit the Chicago Cubs. The last time Carpenter pitched in the majors was Game 7 of the 2011 World Series. Friday's game might not have the same competitive implications, but the significance of Carpenter taking the mound is perhaps greater.