Injury watch: Peterson, Collie, Moreno

• If Adrian Peterson didn't kill your fantasy playoff hopes in Week 14, he just might have sealed the deal this week. Peterson, who had been nursing ankle and knee injuries but was expected to play Monday night, was instead a late scratch after pregame warm-ups did not go well. Although the injury report specifically listed "ankle, knee," coach Leslie Frazier had noted late last week that the thigh contusion Peterson suffered when he collided with Tarvaris Jackson in Week 15 was what was hampering him most. As it turns out, the thigh was what ultimately kept him off the field Monday night. Frazier indicated that the game being played outdoors did not factor into the decision to rest Peterson, telling the Minneapolis Star Tribune that, based on what he saw in pregame workouts, "It wouldn't have been wise to put him out there."

• Meanwhile, quarterback Brett Favre made an unexpected start but left early after suffering a concussion. When speaking with reporters after the game, Favre certainly sounded like someone who has played his last game. His medical status should be updated later this week, but it appears Joe Webb really will start in Week 16.

• Once again, Green Bay Packers quarterback Aaron Rodgers could not deliver fantasy points for your team as he was still recovering from a concussion. Unlike Week 14, however, fantasy owners had warning this time around. The positive takeaway is that Rodgers did travel with the team to New England and was wearing a headset on the sideline, indicating he had made some progress during the week. Still, the decision for him to rest was a medical one, and Rodgers will continue to be evaluated throughout the week to determine whether he will be able to return Sunday. Although his progress thus far is encouraging, it does not ensure he will pass all tests by Sunday, so fantasy owners should continue to have a backup plan.

Indianapolis Colts wide receiver Austin Collie returned to action for the first time in a month and was delivering an excellent performance -- until he exited the game with yet another concussion. The sight of Collie motionless after another blow was disheartening and distressing, but this time he was able to walk off the field under his own power, escorted by the medical staff. The Colts remain cautious regarding Collie's health, as expected, yet they have not ruled out his return to play, either.

Coach Jim Caldwell emphasized to reporters Monday that any determination regarding Collie's return to practice or play is entirely up to the medical staff. After complimenting the skill of the Colts' medical personnel, Caldwell said, "Here's the thing, there is not a coach that makes any decision on anyone who has a concussion or anything of that nature. It's a medical decision."

Colts team president Bill Polian perhaps summed up the situation with Collie best, saying, "At this point we're certainly going to err, and we did last time when he missed a month, but we're certainly going to err so far on the side of caution you won't be able to see the other side. So we'll see how it goes. But it's too early in the week to make any kind of a judgment." Polian added that the team will want to see how Collie responds in the next 48 hours. Although the team will refrain from making a hasty announcement, fantasy owners should prepare for the likelihood that Collie will not be available in Week 16 against the Oakland Raiders.

Houston Texans running back and fantasy star Arian Foster left this week's game early, as well, but the nature of his injury was unclear. Foster had been listed on last week's injury report with a hip ailment that cropped up during Thursday practice. He was designated probable heading into the game, however, suggesting that the injury was not serious and was no major threat to his status. Immediately after the game, coach Gary Kubiak sounded as if he thought Foster's ankle was the problem. Foster later told the Houston Chronicle that he had a "muscle spasm in [my] glute." In other words, a spasm in his, ahem, rear end. The good news is that the overall picture is good for Foster heading into Week 16, but fantasy owners should monitor how he fares in practice throughout the week.

Denver Broncos running back Knowshon Moreno has been fairly healthy since overcoming his early-season hamstring injuries. In Sunday's game against the Raiders, however, Moreno took a shot to the ribs in the first quarter, forcing him out of the game. Bruised ribs can be very difficult for a running back to play through, and Moreno's status is uncertain heading into this week's contest against the Texans. Moreno is not the only Bronco with a rib injury; quarterback Kyle Orton's ribs are to blame, in part, for his not starting in Week 15. According to The Denver Post, coach Eric Studesville will start Tim Tebow this weekend over Orton. Studesville said the decision came as a result of Orton's injury and Tebow's decent performance Sunday in Oakland.

San Diego Chargers tight end Antonio Gates continues to be held out of practice, and we likely will not learn his status until game time approaches. There were rumblings this past week that Gates might not return for the rest of the regular season because of limitations with his still healing foot. Meanwhile, his teammate Malcom Floyd, who did not play in Week 15 after a setback with his injured hamstring, could return Sunday when the Chargers travel to Cincinnati. Floyd did not practice Monday, but coach Norv Turner told The San Diego Union-Tribune, "I think we've made progress." The team will not make any projections as far as Floyd's availability until at least Wednesday.

• The Chargers will not have to account for Cincinnati Bengals wide receiver Terrell Owens this week. Owens, who was already dealing with a knee issue heading into Week 15, aggravated the condition (reportedly a meniscus tear) and is done for the year after being placed on injured reserve.

• The Detroit Lions aren't naming a starting quarterback just yet, but it very well could be the return of Shaun Hill. Hill has missed time with a broken right index finger but returned to light practice last week. Drew Stanton, who had been filling in for Hill, separated his left (non-throwing) shoulder, according to the Detroit Free Press. Impressively, he was able to finish the game after taking a painkilling injection at halftime, but he might be sidelined this week for Hill. The Lions might not announce their decision until Sunday.

• It looks as if the Pittsburgh Steelers could have tight end Heath Miller back in the lineup Thursday night. According to the Pittsburgh Tribune Review, coach Mike Tomlin said, "We anticipate Heath being fine." Miller has missed the past two games while recovering from a concussion.

• The Fort Worth Star-Telegram reports that Dallas Cowboys running back Marion Barber and wide receiver Roy E. Williams were present for the team's walk-through practice. Barber has missed several weeks with a calf strain, and Williams sat out Week 15 with a groin injury. Meanwhile, quarterback Tony Romo finally was placed on injured reserve. Stay tuned.

We will continue to update these injuries and others as the week progresses. Check back for the latest injury updates affecting Week 16 on Thursday and Saturday!