Eagles add 13 rookie free agents, including Chris Polk

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Eschewing any triskaidekaphobic tendencies, the Philadelphia Eagles have announced the addition of 13 new undrafted free agents.

They are: WR Elvis Akpla (Montana State); LS Matt Camilli (UTEP); TE Chase Ford (Miami); CB Cliff Harris (Oregon); FB Emil Igwenagu (Massachusetts); WR McKay Jacobson (BYU); WR Damaris Johnson (Tulsa); WR Aaron Pflugrad (Arizona State); RB Chris Polk (Washington);  FB Jeremy Stewart (Stanford); FS Phillip Thomas (Syracuse); P Ryan Tydlacka (Kentucky); WR Darnell Williams (Louisiana College).

The biggest name is Polk, who widely was expected to be drafted.  He joins a depth chart that includes LeSean McCoy, Dion Lewis, Graig Cooper, and seventh-round rookie Bryce Brown.