EVEN BEFORE the draft ended, teams were working the phones to line up undrafted free agents.

The Eagles have agreed to terms with 13 players: Miami tight end Chase Ford; Oregon cornerback Cliff Harris; UMass tight end Emil Igwenagu; Tulsa wide receiver Damaris Johnson; Washington running back Chris Polk; Syracuse safety Phillip Thomas; Arizona State wide receiver Aaron Plufgrad; Louisiana College wide receiver Darnell Williams; Montana State wide receiver Elvis "DeClan" Akpla; UTEP longsnapper Matt Camilli; BYU wide receiver McKay Jacobson; Stanford fullback Jeremy Stewart; punter Ryan Tydlacka.

The Eagles now have 88 players on their roster and can go up to 90.

The most interesting name among them is Polk, whose numbers are eye-popping – 4,049 rushing yards in his three-year career, second-most in school history. He ran for 1,341 yards last season and caught 29 passes for 324 yards. He had 15 touchdowns.

Some draft analysts had Polk going as high as the second round and no lower than the fourth, but injury concerns had teams shy away from him. According to the Seattle Times, Polk dislocated his left shoulder two games into the 2008 season and then had season-ending surgery. He had a torn left labrum in 2009, having surgery after the season. He'd also had arthroscopic knee surgery shortly before the 2011 season. There also was a report of a hip injury.

"I will just have to go out there and show them I have a lot of great football left in me," Polk told NFLDraftScout.com. "I know teams are concerned about my shoulder, but I also heard somebody say something about a degenerative hip, and there is just no truth to that. I had labrum surgery on the shoulder a year ago and it didn't slow me down last season."

Polk chose the Eagles over the Redskins.

He could have returned for another year at Washington, but decided to enter the draft after his junior season. According to reports, his performance at the Senior Bowl causes some questions among draft analysts, but he rebounded at the school's Pro Day.

Polk would join LeSean McCoy, Dion Lewis, Graig Cooperand seventh-rounder Bryce Brown as the running backs on the roster.