The Vikings starting running back Adrian Peterson limped off the field during the second quarter of the Vikings match up with the Washington Redskins. It appeared that Peterson may have injured up his ankle during a run.
According to Tom Pelissero of ESPN:
Redskins linebacker Lorenzo Alexander appeared to land on Peterson's ankle at the end of a rushing play with about 10 minutes remaining in the second quarter.
Peterson has struggled during the 2010 NFL season to find his form from 2009, when he rushed for 18 touchdowns and 1383 yards on 314 carries. So far this season Peterson has managed only 980 yards and 7 touchdowns on 211 rushes. However, Peterson is having what may turn out to be his best year receiving wise, already having caught 31 passes (good enough for his second best reception number of his career) for 297 yards and a touchdown (which matches his previous career high in a season.
His return is probable but Peterson is currently on the sidelines nursing the injury.