'Bare Knuckle Fighting Championship 4: USA vs Mexico' was a bare-knuckle fighting event held by Bare Knuckle Fighting Championship on February 2, 2019 at the Beto Ávila Stadium in Cancun, Mexico. This was the first international bare-knuckle boxing event by Bare Knuckle Fighting Championship (BKFC).

Katie has escaped an abusive household with her dog and younger sister Haley, in exchange for a less than ideal temporary housing environment. They soon realize that someone is too eager to welcome them to the neighborhood.