Chiefs quarterback Trent Green has been officially ruled out of Sunday’s game against the Broncos. Green is still trying to recover from a concussion suffered after a hit by Bengals defensive lineman Robert Geathers. After the hit, Green temporarily lost consciousness and doesn’t remember the hit. Journeyamn Damon Huard will replace Green under center Sunday. Before he replaced Green in the third quarter of the Cincinnati, Huard hadn’t completed a pass in the NFL since 2000.