San Francisco 49ers operating again Jordan Mason, the NFL’s main rusher, is believed to have suffered a sprained AC joint that isn’t thought of severe throughout Thursday night time’s win at Seattle, however he’ll endure additional testing Friday, sources instructed ESPN’s Adam Schefter.

Mason injured his left shoulder within the first half of the 36-24 win over the Seahawks, returned for one carry to open the third quarter and was solely accessible in an emergency scenario the remainder of the sport.

He completed with 73 yards on 9 carries and caught one other move for 9 yards. On the season, Mason has 609 dashing yards on 114 carries.

The 49ers are already with out key gamers equivalent to operating again Christian McCaffrey (Achilles tendinitis), linebacker Dre Greenlaw (torn Achilles), defensive deal with Javon Hargrave (torn triceps) and security Talanoa Hufanga (torn wrist ligaments).