Ole Miss defensive back Brandon Turnage showed off his athleticism Saturday at the Grove Bowl Games to win the inaugural slam dunk contest. The competition was one of many challenges that were a part of a new spring game format as the Rebels ditched the typical scrimmage this year. Turnage wowed the judges, including Ole Miss basketball coach Chris Beard, with his first dunk of the afternoon. He threw down a double-pump slam with his back to the basket that earned him a perfect score. You can view the dunk below. Turnage wasn’t done there, however. In total, he completed four dunks on the day …