Browns quarterback Baker Mayfield left Sunday's game against the Patriots with a right knee injury and is questionable to return, the team announced.
Mayfield was hit by New England outside linebacker Matthew Judon on a pass attempt. After the hit, he attempted to get up from the ground but fell back down before eventually limping off the field.
Mayfield tossed his helmet off before entering the blue medical tent. Case Keenum was sent in to replace the injured signal-caller.
The 26-year-old quarterback has dealt with a slew of injuries already this season. He has a torn left labrum and a shoulder fracture but is playing through it.