The Redskins will sign running back Byron Marshall after Rob Kelley sprained his medial collateral ligament during Sunday’s loss to the Vikings. (Patrick McDermott/Getty Images)

The Redskins have placed running back Rob Kelley and linebacker Will Compton on injured reserve for ailments suffered in Sunday’s loss to the Minnesota Vikings, the team announced Tuesday.

Kelley sprained his medial collateral ligament in his knee and aggravated an already sprained ankle during the first quarter, while Compton had a lisfranc sprain in his foot. Neither returned to the game after their injuries.

Kelley and Compton were expected to miss multiple games following their MRI exams on Monday as Redskins Coach Jay Gruden hinted at the possibility of putting them both on injured reserve to make room on the roster for other acquisitions.

Kelley finished the season with 194 yards on 62 carries in seven games during an injury-riddled second year. Compton, who appeared in every game but started three, finished with 19 combined tackles, an interception and three passes defended.

The Redskins signed Byron Marshall off the Eagles’ practice squad and free agent defensive tackle Caraun Reid as corresponding moves. Washington also waived defensive lineman Brandon Banks, leaving an open spot on the 53-man roster. With Mason Foster and now Compton on injured reserve, the Redskins have just three inside linebackers on the active roster — Zach Brown, Martrell Spaight and Josh Harvey-Clemons — and could use a fourth on the team. Pete Robertson, who has been on the practice squad all year, has been practicing at inside linebacker, according to a person with knowledge of the situation. He’s familiar with the defense as Robertson has been with the team throughout the offseason. Washington also could use that spot to sign another safety if DeAngelo Hall (knee) and Montae Nicholson (shoulder) are both in jeopardy of missing Sunday’s contest against the New Orleans Saints.

Washington released defensive lineman Tavaris Barnes from the practice squad. If Banks clears waivers, he likely would return to the practice squad, where he has been all season until his promotion last weekend.

Prior to acquisition of Marshall, the Redskins had just two healthy running backs on the active roster: rookie Samaje Perine and Chris Thompson. They previously had Mack Brown as their fourth back, but they waived him on Oct. 28 to add depth to their depleted offensive line. Two days later, Brown was claimed by the Vikings. Washington had since worked out a number of running backs to have a third option on the practice squad, but never signed one.

Marshall, a 2016 undrafted free agent out of Oregon, has spent the entire season on Philadelphia’s practice squad. He was on the Eagles’ active roster for the final three games of his rookie season, recording 64 yards on 19 carries and three receptions for 10 yards. Marshall, 23, also returned two kicks.

In four preseason games, Marshall recorded 31 carries for 111 yards and a touchdown to go along with four receptions for 14 yards.

Marshall, listed at 5-foot-9 and 201 pounds, had his career at Oregon cut short four games into his senior season because of a lower leg injury. Before that, Marshall recorded 1,038 rushing yards as a sophomore and 1,003 receiving yards as a junior. He became the first player in Pac-12 history to have seasons with 1,000 rushing yards (2013) and 1,000 receiving yards (2014) during his collegiate career.

In 42 games at Oregon, Marshall finished with 3,170 yards from scrimmage and 27 touchdowns.

Reid, listed at 6-foot-2 and 298 pounds, has recorded three sacks in 34 games (12 starts) during his four-year career. He has played just one game this season, with the Detroit Lions, before he was released.

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