It’s rare that you see an NFL sports betting line so out of balance as the one for this Sunday’s matchup between the San Francisco 49ers and the Philadelphia Eagles seems to be. The Eagles sit at 10-1, while the 49ers have an 8-3 record – and the game is in Philadelphia. The Eagles trailed both the Kansas City Chiefs and the Buffalo Bills by 17-7 margins the last two weeks but roared back to win both games.