Purdue linebacker Markus Bailey will see his senior season end after just two games, according to a report from Mike Carmin of the Journal & Courier.

On Wednesday afternoon, Carmin reported that Bailey has suffered a season-ending knee injury. Head coach Jeff Brohm delivered the news while talking with the media. The linebacker was an anchor on Purdue’s defense and arguably the unit’s best player.

The injury comes after Purdue’s 42-24 win over Vanderbilt on Saturday. Bailey played in each of the first two games of the season.

In two games, Bailey had racked up 14 tackles, two tackles for loss and a sack. Last year, he registered 115 stops with nine tackles for loss to his name.

During his career with the Boilers, Bailey has totaled 324 tackles with 28 tackles for loss. He’s also totaled six interceptions.

This is a huge blow to the Purdue defense, which has already struggled early in the season in games against Nevada and Vanderbilt. The Boilermakers currently rank last in total defense, allowing 447.5 yards per game in the first two contests. They also rank last in pass defense and scoring defense.

Purdue has a huge test on Saturday, as it will host TCU under the lights at Ross-Ade Stadium. The Horned Frogs are a 2.5-point favorite in the game. If the Boilermakers are to pull off the upset, they’ll have to do it without their best defender on the field.

The Boilers are currently 1-1.