Broncos' Lock, Riddick to open season on IR

Denver Broncos quarterback Drew Lock, running back Theo Riddick, and tight end Jake Butt will begin the season on injured reserve, general manager John Elway said Saturday, according to ESPN's Jeff Legwold.

Lock, a rookie, is expected to miss several weeks with a thumb injury. The second-round pick missed the final two preseason games because of the ailment.

Riddick fractured his shoulder during his preseason debut Aug. 10 and was initially ruled out six-to-eight weeks. The veteran joined Denver following his release from the Detroit Lions and was expected to play primarily on passing downs.

Butt recently underwent surgery on the same knee he tore at Michigan in 2016. He has eight career catches for 85 yards.

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