The Pittsburgh Steelers injury luck continues to take a turn for the worst. On Tuesday, head coach Mike Tomlin said in a press conference that running back Jaylen Samuels will miss “roughly a month” after undergoing arthroscopic knee surgery on Monday.

Said coach Tomlin, via the Steelers official website:

“He had a knee sprain, and he’s roughly going to be out a month, but as we get closer through this process we’ll know what the timetable looks like. That’s (an injury) that showed up after the game, even after I visited with (the media) after the game. We had him evaluated and saw that the procedure was necessary, so we made the decision to fix it and fix it ASAP, and it was fixed (Monday).”

Samuels played in Sunday's overtime loss to the Baltimore Ravens. The second-year back recorded three rushes for two yards, three receptions for 11 yards and two pass attempts for four yards and an interception. For the season, he has 133 scrimmage yards on 31 touches.

Formerly a tight end for the N.C. State Wolfpack, Samuels is a chess piece for the Steelers offense, as he lines up everywhere.

Without Samuels, the Steelers will rely on Pro Bowler James Conner to carry most of the workload out of the backfield, as he has done. Rookie Benny Snell should also receive an uptick in snaps. The rookie has six attempts for 30 yards after Pittsburgh selected him in the fourth round.

The Steelers are 1-4 heading into their “Sunday Night Football” matchup with the 2-3 Los Angeles Chargers in California.