On Wednesday, the Senior Bowl announced the addition of nine players from the Pac-12 to the roster. One of those players, Washington running back Chris Polk, turned more than a few heads since his school lists him as junior. So what happened?

The assumption stemmed from Polk's shoulder injury in 2008 that forced him to miss all but the first two games of the season. It qualified him for a medical redshirt, but Polk never applied. As a result, his eligibility ran out following the Huskies' 2011 season.

"We made sure that we followed proper protocol before we invited Chris and that entailed getting everything cleared through the NFL and Coach Sarkisian at the University of Washington," Senior Bowl President and CEO Steve Hale said.

Polk is a very well-regarded prospect. He accumulated 4,049 rushing yards and 26 touchdowns. He averaged 101 yards per game in 40 career games and an average of 5.1 yards per carry.

Related: SB Nation's latest 2012 NFL Mock Draft

Mocking the Draft, SB Nation's NFL Draft hub, ranks Polk fourth on the list of running backs in the 2012 NFL Draft.

Polk was one of nine Pac-12 players added, for a total of 10 players from that conference. Arizona quarterback Nick Foles was the only Pac-12 player previously announced.

For more Washington Huskies coverage, check out UW Dog Pound. For more on the Senior Bowl and complete draft coverage, check out SB Nation's 2012 NFL Draft page and Mocking the Draft.