Weakside linebacker Danny Trevathan, the Denver Broncos' leading tackler, has been carted off the field with a left knee injury.
Trevathan was injured during 11-on-11 drills toward the end of Tuesday morning's workout.
There was no immediate word on the extent of his injury or how much time he'll miss.
Earlier, Trevathan was involved in one of several scrums that erupted between the offense and defense during team drills.
Trevathan is coming off a breakout season in which he led the Broncos with 124 tackles and picked off three passes. He also led the team with two dozen tackles in the playoffs.
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