NFL players are usually pretty loyal to their schools, and defensive tackles Haloti Ngata and Dwan Edwards are no exception.Ngata, who played for Oregon, said he and Edwards had a bet on Oregon State at the Ducks on Thursday night. At stake? The loser has to wear the winning team's sweatshirt on Friday."I'm pretty confident," Ngata said a few hours before the game.But Edwards, who played for the Beavers, said he never agreed to the bet."We're not doing that," he said. "If we were at home, I might feel a little better about that."I guess we'll see who was right when the Ravens open the locker room later this afternoon.