The Facts: The offseason shoulder surgery Polk underwent after the season was "major," according to Adam Caplan of ESPN.

Diehards Line: The Eagles never revealed the exact nature of the shoulder injury that Polk sustained in Week 8. As the Redzone.org notes, Polk began to cut into Bryce Brown's workload during the course of the season and then had the surgery almost immediately after the Eagles' home playoff loss to the Saints. Polk is expected to be healthy enough by training camp to battle Brown for the No.2 RB job. As the Philadelphia Inquirer notes, both Polk and Brown are talented players -- Inquirer staffer Zach Berman thinks Brown has the better chance of being an impact starter in the NFL – but Polk is an intriguing player. He improved from his rookie year to his second season. He has a rugged running style that produces positive yards, and the coaching staff wanted to get him on the field. Berman is also curious to see if the Eagles move Brown on draft day. ... Stay tuned.