Polk (hamstring) is listed as active Sunday at Arizona, Geoff Mosher of CSN Philadelphia reports. Polk is in line for his first touch of the season due to Darren Sproles' (knee) absence. Still, the existence of LeSean McCoy in the Eagles' backfield doesn't provide much confidence that Polk will receive more than a handful of looks.

Polk (hamstring) could have an expanded role Sunday against the Cardinals if Darren Sproles (knee) is unable to play. It's looking increasingly likely that Sproles will miss the game; ESPN's Chris Mortensen reported that he does not expect him to play. Polk would be the biggest beneficiary of a Sproles absence, but the third-year runner has yet to receive a carry this season and would probably be limited to a bit role on offense behind LeSean McCoy.

Polk (hamstring) is listed as probable for Sunday's game against the Cardinals after participating fully in practice all week, the Eagles' official site reports. Buried on the running back depth chart, Polk's primary value to the Eagles right now is on special teams as a return man. He should be available Sunday if you need him in a return-yardage league.

Polk (hamstring) is practicing Tuesday. Polk was banged-up in Philadelphia's Week 6 game, but as he expected following their recent bye week, Polk is back practicing in advance of Sunday's contest versus the Cardinals.

Polk (hamstring), who was inactive for Sunday's 27-0 win over the Giants, said after the game that he will be read to play when the Eagles come out of their Week 7 bye, NJ.com reports. Darren Sproles suffered a knee injury during Sunday's game, but with early signs indicating that the issue probably isn't serious, Polk is unlikely to return to a significant role.

Polk (hamstring) is out for Sunday's game against the Giants. Polk's hamstring injury leaves the Eagles with just LeSean McCoy and Darren Sproles as their only running backs on the roster, so the team might consider adding practice squad runner Matthew Tucker for depth.

Polk (hamstring) didn't take part in practice Wednesday, CSN Philadelphia reports. Polk missed the vast majority of training camp due to a Grade 2 tear of his hamstring, meaning the injury suffered Sunday is cause for concern. His lack of a touch on offense this season doesn't lend itself to much fantasy utility, but if he sits out in Week 6, the Eagles' will require a replacement on kickoff returns. An absence would result in Josh Huff or Nolan Carroll taking on such duties.

Polk suffered a hamstring injury during Sunday's win over the Rams, the Philadelphia Inquirer reports. Polk missed the entire preseason due to a hamstring injury, so Sunday's latest occurrence is somewhat concerning. While Polk hasn't been handed a single carry this season, he has been the Eagles' kickoff returner to date, totaling 202 yards and one touchdown on five run-backs through five games. Should he be sidelined moving forward, Darren Sproles could add kickoff return duties to his current punt returner role.

Polk (hamstring) is active for Monday's game at Indianapolis, Sheil Kapadia of PhillyMag.com reports. The third running back on the Eagles' depth chart, Polk is also making his first appearance of the season. Therefore, his snap count is in question, especially behind fantasy stalwarts LeSean McCoy and Darren Sproles.

Polk (hamstring) is probable for Monday's game against the Colts, the Eagles' official site reports. Given that he's behind LeSean McCoy and Darren Sproles in the Eagles' RB pecking order these days, Polk is an injury break away from lineup consideration.