Technically, every player who plans to enter the 2015 NFL draft will make or break his stock next season. The game tape provided from his final year of college will go further than almost any other factor in determining where he's drafted.
To wit, Bleacher Report's Matt Miller came out with a mock draft last June that had Aaron Lynch going No. 7 and Tajh Boyd going No. 8 overall, while players such as Greg Robinson, Blake Bortles and Khalil Mack were nowhere to be found in the first round.
It happens every season—and often in the most unexpected places.
Some players, though, are in a more precarious position than others. Usually because they are seniors (which make up the majority of this list), one bad season could send them tumbling down the draft board, while one good season could send the shooting toward the top.
Let's take a look at who qualifies.