USC offensive lineman Andrew Vorhees put up 38 reps of 225 on the bench press Monday morning at the NFL Combine. He did so with no leg drive.

According to NFL Network’s Tom Pelissero, Vorhees is feared to have suffered a torn ACL during drills on Sunday. The former All-American guard was viewed as a player who could go in the top three rounds of the upcoming NFL Draft.

If that injury is indeed confirmed, Vorhees will be facing an extended rehab that could not only impact his draft positioning but cut into most or all of his rookie season.

Vorhees appeared in 44 games on the offensive line during his six-year USC career, with 25 starts at right guard, eight starts at left guard, and four starts at left tackle. Over his final two seasons, Vorhees was consistently one of Pro Football Focus’s highest-graded offensive linemen in the country.

He measured in a 6-foot-6, 310 pounds at the Combine over the weekend, with 10-inch hands and 32.125-inch hands. Vorhees participated in the vertical jump and the broad jump, though his marks in each were fairly average compared to his peers.

The NFL Draft begins on April 27.