UFC BJJ 4
UFC BJJ 4: Tackett vs. Dorsey was a submission grappling event produced by UFC Brazilian Jiu-Jitsu, held at the UFC Apex in Las Vegas, Nevada, United States, on December 11, 2025.
Background
The event is headlined by three championship bouts. Andrew Tackett makes the second defense of his UFC BJJ welterweight title, while his older brother, William Tackett, meets former IBJJF No-Gi world champion Ronaldo Júnior for the inaugural middleweight championship. In the women's division, Aurelie Le Vern faces Raquel Canuto to crown the promotion's first women's featherweight champion.Elsewhere on the card, 10-time IBJJF world champion Mayssa Bastos makes her promotional debut against Tubby Alequin in a women's strawweight bout. Recent two-time ADCC Trials winner Dorian Olivarez takes on 2023 IBJJF world champion Samuel Nagai in a lightweight matchup.
The women's featherweight division also features a high-profile bout between Bella Mir, daughter of former UFC heavyweight champion Frank Mir, and Rana Willink, daughter of former Navy SEAL Jocko Willink. Additionally, UFC veteran Jussier Formiga, who recently turned 40, squares off against Lucas Pinheiro, a former IBJJF Gi and No-Gi world champion who is ten years his junior.