Jaxson Dart injury: Everything we know as Giants’ QB leaves game vs. Rams

Jaxson Dart comes off the field after suffering a knee injury Monday night. | Getty Images

New York Giants quarterback Jaxson Dart went down with a left knee injury on the team's first drive Monday night against the Los Angeles Rams. Initial reports are that the injury is believed to be a sprained MCL. Dart will undergo an MRI on Tuesday.

We'll know tomorrow," head coach John harbaugh said after the game. That's [MCL sprain] in the neighborhood of it, I would say."

Dart was sandwiched between Rams defenders Byron Young and Josaiah Stewer on a third-and-8 incompletion to Theo Johnson from the Rams' 41-yard line.

Dart did walk slowly off the field under his own power. Dart has been ruled out. GM Joe Schoen told ESPN that the quarterback is going to be OK." ESPN's Jordan Ranaan reported that Dart wanted to return to the game.

Jameis Winston took over at quarterback for the Giants on their second offensive series.

Dart protecting himself from big hits and concussions has been a constant story. This, though, was a hit from the pocket after which his left knee appeared to bend in an awkward manner.

Dart limped slowly to the locker room after being checked in the medical tent.

John Harbaugh had this to say about Dart's injury during a brief halftime interview:

We're just focused on the second half, trying to find a way to win the game. We're not thinking about that right now."

Dr. David Chao, a former NFL team doctor who goes by @ProFootballDoc on X, offered a quick take on the injury.

Not expecting season ending
Hard to return but not surgical injury
Foot off the ground saves him https://t.co/qXROCLhts9

- David J. Chao - ProFootballDoc (@ProFootballDoc) September 22, 2026

Here's more from Dr. Chao:

Good news for Jaxson Dart: By video, I do not believe he suffered a season-ending ACL tear.

The concern is an MCL sprain, an injury likely measured in weeks, not months. The MRI will determine the severity. pic.twitter.com/6uS1bteswL

- David J. Chao - ProFootballDoc (@ProFootballDoc) September 22, 2026

Several starting quarterbacks have already suffered injuries this season. That list includes Sam Darnold of the Seattle Seahawks, Jayden Daniels of the Washington Commanders, and Caleb Williams of the Chicago Bears.

We will have more on Dart's injury when it becomes available.