Vikings coach Leslie Frazier has listed running back Adrian Peterson as "questionable," meaning the guy we all assumed would miss Sunday's game against the Eagles, now has a 50-50 chance of playing.

Once again, we may find out that assuming the worst for Adrian Peterson isn't a wise thing to do.

Peterson practiced today for the first time this week. According to Frazier, Peterson planted and showed good burst off the right foot that he sprained early in the second quarter of last week's game at Baltimore.

"It was impressive when you consider the early diagnosis," Frazier said. "He's unique. Very unique. He's so different than everybody else when it comes to recovering from injuries. We've been in situations in the past where you thought he wouldn't make it and he made it. So it was always in the back of my mind the chance he would make it. He's amazing."

Frazier sounded optimistic, but was not willing to go beyond listing Peterson as questionable in part because he'll need to see how Peterson's foot responds tomorrow after going through today's workout. Frazier also indicated it could be a game-time decision on whehter to play Peterson.

Meanwhile, running back Toby Gerhart, who suffered a hamstring injury in last week's game, also returned to practice today for the first time this week. Frazier said Gerhart looked good, but was kept from testing the hamstring with the kind of cuts and burst he would typically use in a game.

Cornerback Chris Cook (knee) was a surprise addition to the injury report today. He was limited in practice and has been listed as questionable.

Cornerback Xavier Rhodes (ankle) and right guard Brandon Fusco (knee) did not practice and were listed as doubtful. Marcus Sherels would start for Rhodes while Joe Berger would start for Fusco.

And, finally, tight end John Carlson still has not passed the NFL protocol for returning from the concussion he suffered last week. Rhett Ellison will get the start. Chase Ford also would be available.

Linebackers Larry Dean (knee) and Chad Greenway (wrist) are listed as probable.

In other news, barring an unlikely setback on Saturday, free safety Harrison Smith will be activated from injured reserve on Saturday and will have a role in Sunday's game. Smith has been on injured reserve the past eight weeks because of a turf toe injury. He returned to practice two weeks ago.