 Coupled with the signing of another McDonald's All-American guard in Willie Warren, the 2008-09 season looked to be promising.The team experienced one of the best starts in school history at 25–1, until Blake Griffin was sidelined with a concussion during the first half of the OU-Texas game on February 21.The Sooners went on to lose consecutive games for the first time all season, losing to Texas by 5 in Austin and Kansas by 9 in Norman.