Nate, you are right to want to move on from Robertson after his initial poor showing. The Cardinals ought to move on quickly from others rather than just keeping them around as blockers. As soon as they come up to the big leagues, if they’re not as good a rookie as Michael Wacha was, then they’re never going to make it. Here’s some more debut seasons that should have been moved on from:
Player 1: 13.50 ERA / 4.5 BB/9
Player 2: 5.09 ERA / 4.09 BB/9 / 3-7 Record
Player 3: 5.61 ERA / 4.98 BB/9 / 3-6 Record
Player 4: 6.43 ERA / 3.54 K/9
Player 5: 4.87 ERA
FYI – That’s Adam Wainwright, Bob Gibson (2nd full season), Chris Carpenter, John Tudor, and Giovanny Gallegos (just to put a reliever in there).