Chris Clark will start at left tackle in Clady's absence. The Broncos also signed veteran offensive tackle Winston Justice.
At a minimum, Clady "will miss significant time because of a Lisfranc injury in the arch of his left foot," the paper said. The team is still gathering medical opinions about the injury.
Coach John Fox did not give reporters a timetable. "I'm no fortune teller or into tea leaves or any of that good stuff," Fox said. "I'm into the reporting nature of how we report the game. So right now it's exactly what we said — it's a left foot sprain — and when we know something (more) we'll let all the fortune tellers know."
Clady has yet to miss a start since being taken by the Broncos in the first round of the 2008 draft, but that streaks appears to be in peril.
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