BKFC 51: Hart vs. Shah took place Friday, September 29, 2023 with 10 fights at Salem Civic Center in Salem, Virginia.

'Bare Knuckle Fighting Championship 2: A New Era' was a bare-knuckle fighting event held by Bare Knuckle Fighting Championship on August 25, 2018 at the Mississippi Coast Coliseum in Biloxi, Mississippi, USA. This event featured the semi-final of a 8-Man Heavyweight Tournament. The inaugural Police Gazette Women's Featherweight champion, Bec Rawlings, was awarded this title by the Bare Knuckle Boxing Hall of Fame 3 days after her win over Alma Garcia at BKFC 1, making her fight with Britain Hart her first title defense.