Updated

ENGLEWOOD, Colo. (AP) Peyton Manning is preparing for his first start in 64 days, and for once he's the healthiest quarterback.

Manning won back his starting job two weeks ago, replacing Brock Osweiler and leading Denver past San Diego.

Osweiler sprained his right knee in that game. He spent the portion of practice that was open to the media Wednesday working on the side with strength and conditioning coach Luke Richesson.

Rookie QB Trevor Siemian shared snaps with Manning.

Denver (12-4) hosts Pittsburgh (11-6) Sunday and Steelers quarterback Ben Roethlisberger is dealing with a sprained right shoulder. He was hurt on a sack by Cincinnati's Vontaze Burfict last weekend.

The Broncos are close to full strength, although Von Miller was sent home sick before Wednesday's practice.

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