Brett Yormark, an executive with Jay-Z’s Roc Nation and former CEO of the Brooklyn Nets, was named Big 12 commissioner Wednesday, another unconventional hire by a major conference amid the rapidly changing landscape of college athletics. KATHY WILLENS/AP FILE PHOTO
By Schuyler Dixon AP Sports Writer DALLAS — Brett Yormark, an executive with Jay-Z’s Roc Nation and former CEO of the Brooklyn Nets, was named…