Larsen (knee) may have sprained his MCL in the Week 11 win over the Panthers, Ben Standig of The Athletic reports.
Larsen exited Sunday's game early due to the injury, but he ultimately returned. With starting center, Chase Roullier (leg) already out for the season, losing Larsen for any length of time would be a big blow to Washington's offensive line. If Larsen did indeed sprain his MCL, the timeline for a return would depend on the severity of the injury. If he's unable to suit up for a Week 12 matchup against the Seahawks on Monday night, Keith Ismael will likely get the start.