The 49ers will be without both their starting tackles for the foreseeable future. Mike McGlinchey will undergo arthroscopic surgery and miss between four and six weeks, Nick Wagoner of ESPN.com tweets.
Joe Staley is recovering from a broken leg. Now, the 49ers’ right tackle will be on the mend as well. Daniel Brunskill, a UDFA who has played in two regular-season games, will take over at right tackle. Brunskill and sixth-round rookie Justin Skule will be San Francisco’s tackle starters, though it should be expected the team will work out tackles soon. Sam Young could certainly be used as a spot starter, but the veteran represents a key swing man currently.
Staley and McGlinchey represented a top component of this year’s 49ers team, which returned all five offensive line starters. They will join Kyle Juszczyk (MCL sprain) in missing a pivotal Week 6 game against the Rams.
McGlinchey has not missed a game with the 49ers or during his three-plus seasons at Notre Dame. He stayed in Monday night’s game throughout. The 49ers lead the NFL with 200 rushing yards per game, doing so despite Jerick McKinnon‘s season-long absence and Tevin Coleman missing two-plus games. San Francisco’s 800 yards are the team’s most through four games since 1959. The team missing more key ingredients will provide a test for the NFC’s last remaining unbeaten.