Cleveland Browns running back Nick Chubb suffered a knee injury Sunday against the Dallas Cowboys and will undergo an MRI on Monday, according to head coach Kevin Stefanski.

Stefanski told reporters of the additional testing after Cleveland's victory over Dallas, saying the team doesn't know the severity of the injury.

Chubb was ruled out during halftime of the contest, with the Browns holding a 31-14 lead. The running back suffered the injury after having his leg rolled up on. He walked off under his own power and headed to the locker room, per Adam Schefter of ESPN.

Chubb entered the 2020 season after a solid sophomore campaign in which the Georgia alum rushed for 1,494 yards and eight touchdowns on 298 attempts. 

The 24-year-old entered Sunday with 292 rushing yards and four touchdowns on 51 carries to begin his third year in the NFL.

With the Browns still searching for their first winning season since 2007, and their first playoff berth since 2002, the tailback was expected to play a large role in helping the club return to prominence. Even as the team took a step back overall with a 6-10 finish in 2019 after going 7-8-1 a year earlier, Chubb's consistent development in the run game provided the franchise with one of the bright spots of the season. 

Chubb's offensive usage has dipped a bit as Cleveland has increased the carry percentage of Kareem Hunt, who had 11 carries for 71 yards and two touchdowns on the day.

If Chubb is forced to miss time going forward, Cleveland will continue to lean on Hunt and D'Ernest Johnson, who had 13 carries and 95 yards of his own, in the running game.