The final few rounds of your draft or last few dollars of your auction budget should be spent aiming for upside. And no place on a major league roster is more packed with upside potential (hit tip to Jay Bilas) than the back end of the starting rotation. Quite often guys changing roles or guys returning from injury fill out the final spots in a team's rotation, and those are just the guys who can provide a monster return on investment. Give them all a bump in keeper leagues, where they can be weapons for a long, long time.
Let's take a look at four such guys heading into this season.