Chris Polk, not LeSean McCoy, takes first team reps during Eagles practice

According to CSN Philly's Reuben Frank, Eagles star running back LeSean McCoy did not take his regular first team snaps with the first team in practice on Wednesday. Instead, he was replaced by backup running back Chris Polk.

"Most of Eagles practice is closed to the media, but the first several sessions are open, and on Wednesday, when the starting offense lined up to walk through a couple running plays, Polk was with the group. He was the only non-starter in the formation.

Polk took two half-speed handoffs from Mark Sanchez and then the group broke up. The first offense didn’t line up again before practice was closed.

McCoy watched the two reps from the sideline while standing next to Darren Sproles.

As the drill ended, McCoy walked over to running backs coach Duce Staley, put his hand on Staley’s left shoulder, and the two could be seen talking for about 15 seconds."

It's not exactly clear what this means, so we can only speculate. Were the Eagles just changing things up in practice? Is Polk going to get more playing time? Who knows.

There's been no word of a McCoy injury, and it doesn't seem likely the Eagles would bench McCoy. He ranks fourth in the NFL with 1,132 rushing yards. McCoy's 4.1 average yards per carry, however, ranks 25th. His efficiency just hasn't been great this season.

The injury-prone Polk has gained 139 yards on 39 attempts in his third season. He's scored three touchdowns in those attempts, with two coming against the Cowboys in Week 15. Polk also returned a kickoff for a touchdown in Week 3.

Chip Kelly will likely be asked about the situation on Thursday. I imagine he's going to downplay the observation and just say that McCoy and Polk were just rotating snaps, but we'll see.