Seattle Seahawks fans hold signs mocking San Francisco 49ers players in the first half of an NFL football game between the Seattle Seahawks and the San Francisco 49ers, Sunday, Dec. 14, 2014, in Seattle. (AP Photo/John Froschauer)

Seahawks throttle 49ers, improve to 10-4

The Seattle Seahawks eliminated their San Francisco rivals from the playoffs and put themselves in better playoff position with a convincing…