Rams head coach Sean McVay told reporters earlier today that starting center Brian Allen had suffered a season-ending MCL injury, according to Lindsey Thiry of ESPN. It remains unclear whether Allen’s injury could impact him next season or in the offseason, but he is definitely done in 2019.

Allen supplanted John Sullivan as the starter at center this season. While the entire Rams offensive line has struggled, Allen has played a major role in those issues. Trade deadline acquisition Austin Corbett had experience at both guard and center and seemed like a possible replacement for Allen, but instead slotted next to Allen at left guard.

When Allen left Los Angeles’ game on Sunday, starting right guard Austin Blythe slid over to center and backup Coleman Shelton replaced Blythe at right guard. Shelton was an undrafted free agent out of Washington last season who bounced between the 49ers and Cardinals practice squads before joining the Rams active roster this season.

The Rams were surely disappointed with Allen’s performance on the interior line, but are no better off with even less depth. If Los Angeles chooses to look at free agent options, Sullivan remains available on the open market.

In addition to Allen, Los Angeles could be without starting right tackle Rob Havenstein for two weeks, as veteran NFL reporter Howard Balzer tweets. Havenstein is dealing with a knee injury.