Jon Jone s, Mike Perry and Yoel Romero walk into a bar… OK, so they didn’t walk into a bar, but while you’re imagining the wild scenarios that hypothetical situation would produce, those three unique personalities popularized in MMA were all present for the inaugural Dirty Boxing Championship at an “undisclosed location” in Florida. Perry’s new fight promotion brings a unique set of boxing rules that allows for MMA elements such as ground-and-pound and elbows.