It may be an AFC divisional game between the Kansas City Chiefs and Cleveland Browns to most, but Sunday's game (3:05 p.m. ET, CBS) is unofficially the Kliff Kingsbury Bowl. Kingsbury, now head coach of the Arizona Cardinals, coached both starting quarterbacks -- Kansas City's Patrick Mahomes and Cleveland's Baker Mayfield -- in consecutive seasons as head coach at Texas Tech. When the two former Red Raiders square off for a chance to play in the AFC Championship Game, Kingsbury will sit back and relish the moment. "It's kind of like being a big brother, I guess," Kingsbury said. "I just sit back as a fan now and try to enjoy the success those guys are having. Just to be around those guys, have a small part in anything that they've been able to become as a quarterback, I take a lot of pride in that and those guys know that."