Marcus Mariota’s MCL Sprain Sends Washington Commanders into QB Depth-Chart Shuffle

Backup quarterback Marcus Mariota suffered a sprained medial collateral ligament (MCL) in his right knee during the first quarter of Washington’s preseason opener against the Miami Dolphins. The injury forced him out after four offensive snaps and will keep him out for the remainder of the preseason. His availability for the regular-season opener in September remains uncertain.

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Mariota, 32, is in his third season with the Commanders and serves as the primary backup to starter Jayden Daniels. He appeared in 11 games (eight starts) last season, posting 1,695 passing yards, 10 touchdowns and seven interceptions. The veteran missed time in each of the past two training camps—opening the 2024 season on injured reserve with a strained pectoral and sitting out the 2025 preseason because of a lower-leg strain.

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• 2025 season: 1,695 yards, 10 TDs, 7 INTs (11 games, 8 starts).

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• Prior injuries: strained pectoral (2024), lower-leg strain (2025).

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• Current QB depth chart: Jayden Daniels (starter), Marcus Mariota (backup), Sam Hartman (third-string), Athan Kaliakmanis (fourth-string).

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• Other camp injuries reported by head coach Dan Quinn: center Nick Allegretti (strained calf), tight end John Bates (hamstring), cornerback Trey Amos (ankle), running back Jeremy McNichols (quad).

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Head coach Dan Quinn confirmed the MCL sprain and said the team will evaluate Mariota’s progress over the next few days of padded practice. Quinn indicated the Commanders do not plan to bring in another quarterback and will rely on the existing backups for the remaining preseason contests. He expressed optimism that Mariota could be ready for the season opener, while noting the injury’s severity makes a regular-season timeline “unclear.”

Baltimore SunUSA TodayESPNMarcus Mariota Injury: Diagnosed with sprained MCL

Mariota’s injury occurred on a handoff to rookie running back Kaytron Allen after a 22-yard pass to wide receiver Dyami Brown. He pivoted on his right leg, favored his knee, and walked off the field under his own power before heading to the locker room. No contact was observed on the play that led to the sprain, though a hit on the preceding snap was noted by some observers.

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Sources differ on the projected impact: several outlets say Mariota will miss the rest of the preseason, while others label his status “likely” and leave open the possibility of a return before the regular season. No official medical assessment has been released, leaving the exact timeline unconfirmed.

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• “We're optimistic he'll be ready at that time.” — Dan Quinn, coach

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• “We'll evaluate the guys tomorrow and I'll have a good sense of what's ahead for the week,” — Dan Quinn, coach

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The Commanders will face the Detroit Lions and Baltimore Ravens in their final two preseason games while monitoring Mariota’s rehabilitation. Quinn is scheduled to provide an update after the next round of practice sessions. The team’s preparation for the September season opener will hinge on whether Mariota can rejoin the roster or if the backup role shifts permanently to Sam Hartman or rookie Athan Kaliakmanis.

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