Detroit Lions quarterback Nate Sudfeld is believed to have torn the anterior cruciate ligament in his left knee in Friday's preseason finale Friday against the Carolina Panthers.
Sudfeld was injured on his only series of the game, when he stepped awkwardly while scrambling near the Panthers sideline.
Lions coach Dan Campbell said Sudfeld is undergoing further testing Monday to confirm the extent of his injury. If he does have a torn ACL, Sudfeld likely would miss the entire 2023 season.
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"If it is the deal with Nate it's awful, and I hate that for him," Campbell said Monday morning.