![Minnesota Vikings running back Adrian Peterson (28) was tackled a gang of Chiefs defenders after a 23-yard run in the third quarter. ] CARLOS GONZALEZ ï cgonzalez@startribune.com - October 18, 2015, Minneapolis, MN, TCF Bank Stadium, NFL, Minnesota Vikings vs. Kansas City Chiefs](https://arc.stimg.co/startribunemedia/QIA2GEUNRPJ7BY3YHOKJF5LILM.jpg?&w=1080)
The Vikings have downgraded starting running back Adrian Peterson to questionable for tomorrow's game against the Lions due to an illness. But he is expected to suit up in Detroit and play.
Peterson was listed as probable on Friday's injury report as he dealt with a finger injury. This illness was not disclosed on the report, which suggests that Peterson became ill today. Per NFL rules, the Vikings have to disclose his illness and make an appropriate change to the final injury report.
If Peterson is unable to go, Matt Asiata and Jerick McKinnon, the two other running backs on the roster, would split snaps at the position.
Last season, with Peterson out of the mix, Asiata handled short-yardage and goal-line work while McKinnon got the bulk of the carries on early downs.
This development comes a week after the Vikings were without starting defensive end Everson Griffen for their 16-10 win over the Chiefs because he became ill the morning of that game. Griffen checked into Hennepin County Medical Center before the game and underwent further testing there.
He returned to practice Thursday and is expected to play against the Lions.
