Who will end up under center for the Denver Broncos at 2:25 p.m. Sunday when they host the Los Angeles Chargers?

The Broncos have been splitting reps between Brandon Allen and rookie Drew Lock in practice this week, according to Denver7 insider Troy Renck.

Allen's stock has quickly faded with consecutive losses. Lock has been battling a thumb injury all season.

Denver (3-8) surely wants to see what it has in Lock. But head coach Vic Fangio has been coy on who will start.

WHEN THE BRONCOS RUN THE BALL: Denver offense averaging 110.5 rushing yards per game (16th in the NFL) vs. Los Angeles defense averaging 112.3 rushing yards per game (20th in the NFL).

WHEN THE BRONCOS PASS THE BALL: Denver offense averaging 192.3 passing yards per game (29th in the NFL) vs. Los Angeles defense averaging 205.3 passing yards per game (4th in the NFL).

WHEN THE CHARGERS RUN THE BALL:  Los Angeles offense averaging 86.7 rushing yards per game (26th in the NFL) vs. Denver defense averaging 113.5 rushing yards per game (21st in the NFL).

WHEN THE CHARGERS PASS THE BALL: Los Angeles offense averaging 276.9 passing yards per game (5th in the NFL) vs. Denver defense averaging 207.5 passing yards per game (5th in the NFL).

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