Jason Kelce is officially hanging up his football helmet.

After 13 seasons in the NFL, the Philadelphia Eagles center has announced that he's retiring.

"I look back on a career filled with ups and downs," he said during a tearful press conference March 4, before reflecting on the 2011 NFL Draft. "I won't forget the call I got from Andy Reid and my father rushing into the room, as tears rushing down his eyes that his son had been achieving his dream."