Philip Rivers' mouth seems to be making as much news as his injured right knee. San Diego's quarterback, caught on camera this year yapping at fans and opposing players, sat out practice Wednesday to rest his sprained right knee as the Chargers began preparing for the AFC Championship Game Sunday against undefeated New England. "It's feeling pretty good. It's feeling better," Rivers said. "I'm treating it like crazy. Obviously the goal is to be ready to play on Sunday, and I'm optimistic I'll be able to do that." Rivers sprained his medial collateral ligament when he landed awkwardly after throwing a 56-yard touchdown pass to Darren Sproles on the last play of the third quarter Sunday in a 28-24 victory over Indianapolis. He didn't return.