Billy Quarantillo

William Daniel “Billy” Quarantillo (born December 8, 1988) is an American mixed martial artist who currently competes in the Lightweight division of the Ultimate Fighting Championship. He was the former King of the Cage Lightweight Champion.

Mixed martial arts career

Early career Born in Ransomville, New York, and trained by way of his adopted hometown of Tampa, Quarantillo began his fighting tenure on the amateur circuit in July 2010. After the Gracie Tampa South representative posted an 8–2 mark through ten outings, he turned pro in 2013.

Quarantillo competed for various regional American organizations, in the process amassing a record of 11–2 and winning the King of the Cage Lightweight Championship and Strike Off Fighting Championships Featherweight Championship.

The Ultimate Fighter Quarantillo also competed on The Ultimate Fighter: Team McGregor vs. Team Faber in 2015. In the preliminary fights, he defeated Brandon Ricetti via TKO in the second round to become a member of Team Faber. In his second bout, he lost to Saul Rogers via unanimous decision after two rounds.

Ultimate Fighting Championship Quarantillo made his UFC debut against short notice opponent Jacob Kilburn at UFC on ESPN 7 on December 7, 2019. He won the fight with a second round submission via triangle choke.

Quarantillo next faced Spike Carlyle at UFC on ESPN 9 on May 30, 2020, in a catchweight bout. He won the bout via a unanimous decision.

In his third bout for the promotion, Quarantillo faced Kyle Nelson on September 12, 2020, at UFC Fight Night 177. He won the fight via knockout in round three.

Quarantillo faced Gavin Tucker on December 12, 2020, at UFC 256. He lost the fight via unanimous decision.

Quarantillo was scheduled to face Herbert Burns on July 17, 2021, at UFC on ESPN 26. However, Burns pulled out in early June due to undisclosed reasons and was replaced by Gabriel Benítez. Quarantillo knocked Benítez down early and eventually won the bout via technical knockout in round three. This win earned him the Fight of the Night award.

Quarantillo fought Shane Burgos on November 6, 2021, at UFC 268. He lost the fight by unanimous decision.

Quarantillo was scheduled to face Bill Algeo on July 16, 2022, at UFC on ABC 3. However, he pulled out due to injury.

Quarantillo faced Alexander Hernandez on December 10, 2022, at UFC 282. He won the fight via technical knockout in the second round. This win earned him the Performance of the Night award.

Quarantillo faced Edson Barboza at UFC on ESPN 44. He lost the fight via knockout in the first round.

Quarantillo faced Damon Jackson on August 5, 2023, at UFC Fight Night 226. He won the fight by unanimous decision.

Quarantillo was scheduled to face Gabriel Miranda on March 23, 2024, at UFC on ESPN 53 However, Miranda was replaced by Youssef Zalal for unknown reasons. He lost the fight via rear-naked choke in round two.

Quarantillo faced Cub Swanson on December 14, 2024 at UFC on ESPN 63. He lost the fight via a one-two punch knockout in the third round. This fight earned him another Fight of the Night award.

Quarantillo faced Carlos Diego Ferreira on August 8, 2026 at UFC Fight Night 284. He lost the fight by unanimous decision. This fight earned him a $100,000 Fight of the Night award.

Personal life Quarantillo's elder brother Austin passed away in July 2025 at the age of 37. On July 26, 2026, Quarantillo and wife Brianna welcomed their third son.

Championships and accomplishments Ultimate Fighting Championship Fight of the Night (Three times)

Professional boxing record