Pac-10 formally becomes the Pac-12 with July 1 addition of Utah Utes, Colorado Buffaloes to the new conference's southern football division

The Pac-10 officially welcomed Utah and Colorado this week to become the Pac-12 in the first shakeup for the conference since 1978. The biggest impact will be seen in football, as the additional teams have allowed the conference to be divided into north and south divisions for football only.