Positions series ($): Quarterbacks | Running backs | Receivers | O-line | Tight ends | Defensive line | Linebackers | Cornerbacks | Safeties | Special teams

Analysis ($): Position battles | Freshmen to watch

Purdue opens its first training camp under Jeff Brohm in early August.

The Boilermakers will need to get much work done in the weeks leading into the season opener against likely ranked Louisville on Sept. 2. They'll need players to improve and lock into making strides in a new offense and new defense.

Who will be the key pieces? Who could break out? Who will have the most pressure entering camp?

Next up: Players with something to prove