That mettle might be tested again with the loss of another key starter.
While the 2012 sixth-round draft pick hardly is a household name, he has been among the Broncos' most valuable defensive players. Trevathan has the speed to hang with tight ends in coverage and ranks No. 1 among 4-3 linebackers in Pro Football Focus' run defense grades.
This team is strong enough to withstand Trevathan's absence, but the lack of depth has to be a concern if it turns out to be a long-term injury.
Travathan confirmed the good news through his Twitter page.