The Cardinals could be on the verge of seeing another pitching prospect make his major league debut. Dakota Hudson was pulled early during his Wednesday start, leading to speculation that the righty was being promoted. A promotion could be in the cards, granted circumstances conspire in the next few days to make a spot start necessary. Given that John Gant threw yesterday against the Reds, Hudson appears to be the backup plan if: (1) Carlos Martinez, who throws Friday with plans to start on Monday, isn’t ready to come back yet, or (2) Austin Gomber, who is in line to start either Sunday or Monday, is needed in relief before then.