Luke Rockhold celebrates defeating Lyoto Machida of Brazil at the UFC Fight Night event at Prudential Center on April 18, 2015, in Newark, New Jersey. Getty Images
Luke Rockhold celebrates defeating Lyoto Machida of Brazil at the UFC Fight Night event at Prudential Center on April 18, 2015, in Newark, New Jersey. Getty Images

Luke Rockhold promises to make things 'nasty' on Karate Combat debut in Dubai