Lucas Brennan

Lucas Brennan (born June 3, 2000)

Early life and education Brennan was born in Irvine, California, in 2000, his family moved to Aubrey, Texas, later in 2006 where he was raised in North Texas. In 2011, Brennan began training in BJJ in middle school. He is the son of American mixed martial artist Chris Brennan.

Brennan graduated Cum Laude from Frisco High School, class of 2018. He was formerly enrolled at the University of North Texas (UNT) in the College of Visual Arts and Design, before leaving to give full commitment to his already ongoing mixed martial arts (MMA) career. Prompted by his signing at age 19 with Bellator prior to his sophomore year.

Mixed martial arts career Amateur career Brennan made his amateur MMA debut on August 12, 2017. Brennan won his debut amateur bout in XKO with a third-round rear-naked choke against Christopher Williams, two months after turning 17 years old and prior to his senior year in high school.

After winning his debut amateur MMA appearance, his next fight would not be until May 2018, which he won via a unanimous decision against Diara Culpepper in the Legacy Fighting Alliance (LFA). Brennan signed to LFA as their first-ever contracted amateur athlete at the time, but LFA would soon shift ownership, and Brennan returned to being a free agent.

His final amateur fight was under the Tuff-N-Uff banner on June 7, 2019, winning a unanimous decision over Isaac Villegas in Las Vegas, Nevada.

Professional career Brennan's professional debut was made in Bellator MMA in the featherweight weight class at Bellator 224 in July 2019. Brennan won in the first round with a rear-naked choke submission against Thomas Lopez.

In November 2019, he fought Jacob Landin and acquired another win at Bellator 233 with a first-round rear-naked choke submission.

A scheduled bout with Jamese Taylor was canceled on the day of the event in February 2020 due to complications in Taylor's weight cut and supposed health. Later that same year at Bellator 244 in August, Brennan face Will Smith and win with a TKO in the second round.

In November 2020, Brennan fought Andrew Salas and won via unanimous decision at Bellator 252. Brennan missed weight for this bout, coming in at 148 pounds, two pounds over the featherweight non-title limit. The bout continued at a catchweight and Brennan was fined a portion of his purse which went to Salas.

Fighting only once in 2021 due to COVID-19 complications at Bellator 260, Brennan faced Matthew Skibicki and won via a first-round anaconda choke submission.

In January 2022, Brennan defeated Benjamin Lugo at Bellator 273 with his self-appointed assassin choke in the first round. This was a first in Bellator's history and the first submission of 2022. However, Talavera pulled out due to unknown reason the week of the event and the bout was scrapped. He was briefly linked to Bellator 289 against Dre Miley, but Miley was not cleared by the Illonois commission to compete.

Brennan faced Josh San Diego on March 31, 2023 at Bellator 293. He won the fight by a rear-naked choke submission in the first round.

Brennan faced Weber Almeida on August 11, 2023 at Bellator 298. He won the fight via knockout knee in the third round.

Brennan debuted with the Professional Fighters League (PFL) at PFL 1 on April 4, 2024 and lost his bout against Dimitre Ivy by unanimous decision.

On April 22, 2024, it was announced that Brennan had parted ways with the promotion.

Ultimate Fighting Championship On April 20, 2026, it was reported that Brennan signed with the UFC and made his debut against Francis Marshall in a lightweight bout on April 25, 2026, at UFC Fight Night 274. He lost the fight by unanimous decision.

Mixed martial arts record Loss

Francis Marshall Decision (unanimous) UFC Fight Night: Sterling vs. Zalal

Las Vegas, Nevada, United States Win

Joshua Weems Submission (rear-naked choke) Xtreme Knockout 71

Arlington, Texas, United States Win

Austin Coleman Submission (rear-naked choke) Xtreme Knockout 70

Arlington, Texas, United States Loss

Mauricio Gomez Decision (split) Fury FC 99

Houston, Texas, United States Loss

Dimitre Ivy Decision (unanimous) PFL 1 (2024)

San Antonio, Texas, United States Win

Weber Almeida KO (knee) Bellator 298

Sioux Falls, South Dakota, United States Win

Josh San Diego Submission (rear-naked choke) Bellator 293

Temecula, California, United States Win

Johnny Soto Submission (neck crank) Bellator 282

Uncasville, Connecticut, United States Win

Ben Lugo Submission (assassin choke) Bellator 273

Phoenix, Arizona, United States Win

Matthew Skibicki Submission (anaconda choke) Bellator 260

Uncasville, Connecticut, United States Win

Andrew Salas Decision (unanimous) Bellator 252

Uncasville, Connecticut, United States Win

Will Smith TKO (punches) Bellator 244

Uncasville, Connecticut, United States Win

Jacob Landin Submission (forearm choke) Bellator 233

Thackerville, Oklahoma, United States Win

Thomas Lopez Submission (rear-naked choke) Bellator 224

Thackerville, Oklahoma, United States