ENGLEWOOD, Colo. — Quarterback Paxton Lynch will miss two to four weeks with a high right ankle sprain, coach Vance Joseph announced on his weekly radio show Monday.

So, it's back to Trevor Siemian, who started the season but was benched a month ago in favour of Brock Osweiler, who was supplanted last week by Lynch.

Lynch got hurt in the second half of Denver's 21-14 loss at Oakland on Sunday. When he went out, the Raiders were leading 21-0 and Siemian threw two TD passes despite not having taken any snaps during the week with Lynch acclimating to new offensive co-ordinator Bill Musgrave.

Joseph also said nose tackle Domata Peko has a sprained left MCL that will sideline him a week or two, ending his 123-game starting streak.

The Broncos (3-8) have lost seven straight for the first time since 1967. They visit the Miami Dolphins (4-7) on Sunday.

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