Following the Chargers‘ win over the Broncos, running back Najee Harris suffered a torn Achilles tendon and will miss the remainder of the season, head coach Jim Harbaugh confirmed on Monday.

The injury occurred in the second quarter of the Week 3 game. Initial reports speculated it might be a severe ankle injury, but testing on Monday confirmed a torn Achilles. Harris had to be helped off the field and was eventually carted to the locker room.

Harris’ injury is unfortunate, as he was signed by Los Angeles in hopes of providing a boost to the backfield alongside rookie Omarion Hampton. He had a remarkable streak, playing in all 71 regular-season games throughout his four years with the Steelers.

Harris missed training camp due to a superficial eye injury sustained during a fireworks incident on July 4.

Hampton will serve as the No. 1 back going forward. Hassan Haskins is the only other running back on the active roster.

Harbaugh said second-year Kimani Vidal will be “next man up.” He also said general manager Joe Hortiz will be scouring the market to see what is available at the position.

This article originally appeared on Chargers Wire: Chargers RB Najee Harris suffers torn Achilles injury, out for season