Cage Warriors 47: Hayes vs. Linderman was an MMA event held on June 2, 2012 in Dublin, Ireland.

World Series of Fighting, also known as WSOF, is an American mixed martial arts (MMA) promotion based in Las Vegas, Nevada. The inaugural WSOF event took place on November 3, 2012 and the main card was broadcast on the NBC Sports Network.

'Bare Knuckle Fighting Championship 1: The Beginning' was a bare-knuckle fighting event held by Bare Knuckle Fighting Championship on June 2, 2018 at the Cheyenne Ice and Events Center in Cheyenne, Wyoming, USA. This was the first bare-knuckle boxing event by Bare Knuckle Fighting Championship (BKFC) and the first sanctioned bare-knuckle boxing event in the United States since 1889. This event featured the quarter-final of a 8-Man Heavyweight Tournament.