Manning replaced Brock Osweiler in the third quarter Sunday and led the Broncos a 27-20 win over the San Diego Chargers that clinched the top seed in the AFC playoffs for Denver. ''My gut told me to turn it over to him,'' coach Gary Kubiak said. Combined with New England's loss at Miami, the Broncos (12-4) secured the No. 1 seed even as they head into the playoffs with a quarterback quandary on their hands. More...