Dallas Cowboys wide receiver Amari Cooper suffered an apparent knee injury in Thursday's 26-15 defeat to the Buffalo Bills.
Cooper told reporters after the game he will get an X-ray on his knee Friday.
The 25-year-old has been a revelation for the Cowboys since being acquired in a trade last season. In nine games with Dallas during the 2018 campaign, he caught 53 passes for 725 yards and six scores, revitalizing the team's pass offense and helping to fuel a playoff push.
Before acquiring Cooper, the Cowboys were 3-4 heading into their bye week.