Adrian Peterson and the Minnesota Vikings have returned from a painful road trip.

Not only did the Vikings lose the lead Sunday in Baltimore three times in the fourth quarter - including twice in the final 90 seconds - they saw their star running back and several other players suffer significant injuries during the loss.

Peterson walked through the Vikings locker room with a boot on his right foot Monday on his way to get a CT scan. X-rays previously revealed no broken bones. Peterson said the medical staff has ruled out the type of Lisfranc injury that can keep a player sidelined for months, rather than weeks.

Though he said he's still sore, Peterson said he's expecting to play on Sunday at home against the Eagles.

The NFL has contacted the Vikings about some questioned calls by the officials in Sunday's game at Baltimore.

Coach Leslie Frazier said he received an unsolicited phone call from the league about some of the rulings Sunday, when the Vikings lost, 29-26.

Frazier declined to specify whether the NFL apologized for mistakes by referee Peter Morelli's crew, but he said "the fact that they called should give you an indication of how they felt about" the game.

Gronkowski out for year

The New England Patriots have placed tight end Rob Gronkowski on injured reserve with a damaged right knee.

Gronkowski was hurt midway through the third quarter of the Patriots' 27-26 win over the Cleveland Browns on Sunday when he was hit on the right knee by safety T.J. Ward after a 21-yard reception.

Gronkowski missed the first six games this season after forearm and back surgeries. In the next six games, he led all NFL tight ends with 37 catches and 560 yards receiving.

Shanahan may sit RG3

Mike Shanahan is still the coach of the Washington Redskins, but Robert Griffin III might not be the starting quarterback this week.

Shanahan said that he was thinking about sitting Griffin for the rest of the season because of concern that the quarterback could be injured.

Shanahan points out Griffin has been sacked 24 times in five games, and that two of the Redskins' three remaining games will be played on artificial turf, including Sunday at Atlanta.

Giants eliminated

Being eliminated from playoff contention is nothing new for the New York Giants. It has happened four times in five years.

The change this season is having it occur in early December.

For the first time since Tom Coughlin took over as coach in 2004, the Giants (5-8) knew on Monday they were out of the postseason picture with three weeks left in the season.

- Inquirer wire services