Sooner Born, Sooner Bred! The Oklahoma Sooners have won the Big 12 Championship! Shop Rally House for all of your Big 12 Championship gear including officially licensed Tees and Hats. We have all the gear you need for the game with Oklahoma jewelry accessories and Sooners socks. Discover more Oklahoma Sooners gear at a local Sooners Rally House store. Order online and have it delivered to your house or your nearby Rally House. Boomer Sooner!