BKB Bare Knuckle Boxing

BKB Bare Knuckle Boxing, founded as BYB Extreme Fighting Series (BYB), is a bare knuckle fighting organization founded in 2015 by former MMA fighter Dhafir ("Dada 5000") Harris and Mike Vazquez, former owner of NASCAR team HRT Motorsports. Harris rose to fame from his staging of backyard bare knuckle fights which went viral online and subsequently became the subject of the Billy Corben documentary, Dawg Fight. BYB is an abbreviation of "Back Yard Brawl", a nod to the company's origins. BYB's fights are held in its patented Trigon ring or cage, which it touts as the smallest fighting surface in combat sports.

In March 2025, Front Office Sports reported that BKB signed a multi-fight deal with Vice to carry live fights, becoming the channel's first live programing as it moved into a heavy sports focus.

In June 2023, beIN SPORTS announced it secured an exclusive media rights deal with BYB in North America to broadcast "Best of BYB" archive shows as well as five live events, making it the first bare knuckle fighting to air live on linear television. In 2024, BYB announced expanded coverage to Fight Network and Fuse.