Conner excelled in the Steelers' matchup with the winless Dolphins. The 24-year-old ran for 145 yards and a touchdown on 23 carries. Conner didn't appear to suffer the injury until the fourth quarter, and Chris Adamski of TribLive.com relayed after the game that Conner's "right shoulder was heavily wrapped and iced and he held that arm gingerly."
Conner has rushed for 380 yards and four touchdowns on 97 carries through seven games this season. He's added 29 receptions, 236 yards and two scores through the air.
Unfortunately, the 6'1", 233-pound back has missed time because of injuries in his three-year career. An MCL injury prematurely ended his 2017 regular season in December, and a lower leg contusion kept him out for three games in 2018.
If Conner is forced to miss time, the Steelers backfield is in trouble. Regular backup Jaylen Samuels has been out since undergoing arthroscopic knee surgery in early October. Samuels was the one who filled in when Conner missed time in 2018.
Rookie running back Bennie Snell Jr. will move up the depth chart to start, assuming the reasoning behind his visit to the medical tent in Monday's game isn't serious. Tomlin said vaguely after the game that Snell had suffered a knee injury.
The only other running back on the Steelers' roster is 24-year-old Trey Edmunds, who had his first rushing attempt of the season against the Dolphins.