Denver Broncos linebacker Danny Trevathan was taken off the field on a cart Tuesday morning with a left knee injury. The initial examination by the Broncos medical staff did not reveal the worst news of a significant injury, but the team was still awaiting the results of an MRI, scheduled for later Tuesday. Read more http://espn.go.com/nfl/story/_/id/1...nver-broncos-carted-practice-left-knee-injury