Denver Post Broncos writer Ryan O’Halloran posts his Broncos Mailbag weekly during the season.
You can pose a Broncos- or NFL-related question for the Broncos Mailbag here. Follow Ryan for more daily updates on Twitter.
Ryan, who is Brandon Allen and what can we expect from him on Sunday?
— Tyson, Denver
Allen was named the starting quarterback on Monday by coach Vic Fangio for at least this week’s game against Cleveland. Joe Flacco’s injury is a herniated disk in his neck and those can be lengthy injuries.