Denver Broncos quarterback Peyton Manning could miss Sunday's crucial AFC West fixture against Kansas City Chiefs after missing practice on Wednesday.
The 37-year-old sustained an ankle injury following an illegal hit against San Diego Chargers, but MRI scan results on Monday suggested he would be fine to play this weekend.
However, doubts over his involvement have surfaced after reports emerged that he sat out of practice in mid-week.
Broncos are currently second in the AFC West standings after nine games, with the Chiefs leading the way thanks to nine straight victories.
Manning has been in fine form this season and appears on course to claim another MVP award.
But can he recover from his ankle sprain in time for Sunday's eagerly-anticipated clash?
Perhaps leaving him out of practice was a deliberate ploy by Broncos to allow him to fully recover him time for the game, rather than an ominous sign that he will be forced to watch from the sidelines.