u202aThe Denver Broncos are placing quarterback Joe Flacco on injured reserve, ending his season, a source told ESPN's Adam Schefter.
Flacco had suffered a bulging disk in his neck and was getting second opinions.
Brandon Allen, claimed off waivers on Sept. 1 from the Los Angeles Rams, will start Sunday's game against the Cleveland Browns. The Broncos are promoting Brett Rypien from the practice squad to back up Allen.u202c
During the second half of Sunday's 15-13 loss to the Indianapolis Colts, Flacco spent much of his time between Denver's offensive series getting his neck attended to by the medical staff.