Trevor Siemian made his NFL debut Sunday in the second quarter of the Denver Broncos' Week 15 game against the Pittsburgh Steelers.
Denver starting quarterback Brock Osweiler — who himself was starting in place of the injured Peyton Manning — was injured late in the second quarter and was taken to the locker room.
Siemian took one snap, a kneel down on the final play of the half. Osweiler was deemed probable to return. The Broncos led the Steelers 27-13 at halftime.
Osweiler returned to the game to begin the second half. Siemian has not taken a second snap.