A light heavyweight bout between former
KSW Light Heavyweight Champion Jan Błachowicz and former
Strikeforce Middleweight Champion Ronaldo Souza served as the event headliner. A light heavyweight bout between
Antônio Rogério Nogueira and
Trevor Smith was scheduled for the event. However, Nogueira was forced to pull out of the event due to injury, resulting in the cancellation of the bout. Smith was then expected to face
Makhmud Muradov at
UFC on ESPN: Overeem vs. Rozenstruik.
Leah Letson was expected to face Duda Santana at the event. However, Letson was removed from the bout in late September for undisclosed reasons. Instead, Santana was expected to face promotional newcomer
Tracy Cortez. However, Santana then withdrew from the bout and was replaced by
Vanessa Melo.
Kevin Holland was scheduled to face promotional newcomer
Antônio Arroyo at the event. However, promotion officials elected to remove Holland from the bout in favor of a matchup a month earlier at
UFC on ESPN: Reyes vs. Weidman. In turn,
Trevin Giles, then
Alessio Di Chirico were briefly linked as replacements to face Arroyo. Instead, Arroyo fought fellow newcomer
André Muniz. A middleweight bout between
Markus Perez and
Jack Marshman was scheduled for the event. However, Marshman was pulled from the event for an undisclosed reason and replaced by
Wellington Turman.
Sam Alvey was scheduled to face former
UFC Light Heavyweight Champion Maurício Rua at the event. However, Alvey was removed from the fight on October 25 due to a broken hand. Instead, Rua fought
Paul Craig. A flyweight bout between former
KSW Women's Flyweight Champion Ariane Lipski and
Priscila Cachoeira was scheduled to take place at the event. However, upon testing positive for a
diuretic and being pulled from the event, Cachoeira was replaced by
Veronica Macedo. In turn, Macedo was not cleared to fight by CABMMA due to severe headaches one day before the event and she was replaced by newcomer Isabella de Pádua. At the weigh-ins, de Pádua weighed in at 130.5 pounds, 4.5 pounds over the flyweight non-title fight limit of 126 pounds. The bout proceeded at a catchweight. As a result of missing weight, de Pádua was fined 30% of her purse, which went to Lipski. At the weigh-ins,
Tracy Cortez and her opponent
Vanessa Melo both missed weight for their fight. Cortez and Melo both weighed in at 136.5 pounds, 0.5 pounds over the bantamweight non-title fight limit of 136 pounds. The bout would initially proceed at a catchweight and no fine was issued due to identical misses. ==Results==