Denver Broncos linebacker Danny Trevathan was carted off the field with a left knee injury today.

According to the Denver Post, the initial diagnosis isn't negative.

Trevathan, a starter, was taken off the field today.

"We have to do the testing, but you never like to see any player go down," coach John Fox said. "So we'll just have to see what the results are."

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Aaron Wilson covers the Ravens for The Baltimore Sun