3:18 PM ET

The Giants confirmed Saturday that Marcus McKethan will miss the rest of the season with a knee injury. After he was carted off the field during a scrimmage, he was afraid.

He was put on the injured list.

At the time of the injury, McKethan was working at right tackle with the second team. The Giants have been short on linemen because of injuries and depth concerns, so he was mostly used as a guard this summer.

The 335-pound freshman was hurt during the scrimmage. He fell to the ground as he tried to anchor. It was a lower leg injury, according to the coach.

The players came over to wish him well after the cart came on the field. They did too. As he exited the field into the locker room, McKethan's right leg was propped on the cart.

The offensive line is getting tested. According to a source, Matt Gono's playing career is over because of his neck problems. On Friday, the Giants signed Will Holden.

The Giants selected McKethan in the 173rd round. He played in 37 games at the University of North Carolina. In his last two seasons, he was honorable mention All-ACC. The Giants were interested in adding depth to the interior of their offensive line this season with the addition of former Tar Heels teammate, Joshua Ezeudu, who has been playing as a second-team guard and tackle for the Giants this summer.