Going into training camp, Eagles running back Chris Polk was considered very close to a lock to make the team.
Speaking to the media on Tuesday, head coach Chip Kelly made it sound like that may have changed due to the running back missing over two weeks of practice with a hamstring injury.
"It's a big factor," Kelly said of Polk missing time. "You gotta be able to play. It's tough for us to say, we know what you can do, but you also have to go out on the field and show it."
Polk was expected to be LeSean McCoy's backup with Darren Sproles remaining as more of a receiver if McCoy would go down at any point this season. With Polk absent, backup running backs Matthew Tucker and Henry Josey have gained ground on him for the final spot. Tucker had two touchdowns against the Chicago Bears in the team's first preseason game, and Henry had an impressive touchdown catch against the New England Patriots last week.