Billy Quarantillo Jumps to 155 for Vet Clash With Diego Ferreira

Twenty-five pro fights in, Billy Quarantillo is doing something he's never done inside the UFC: cutting to a new number. After 11 straight Octagon appearances at featherweight, the 18-7 veteran moves up to lightweight this Saturday, meeting fellow grinder Diego Ferreira in the co-main event of UFC Fight Night: Gamrot vs. Salkilld at the APEX. It's his 12th UFC walk, and the first time he's competed at 155 since he boxed professionally back in 2018.

The reasoning is refreshingly unglamorous. Quarantillo said the featherweight cut had turned brutal over his last couple of camps, with fight week consumed by what he could eat and where the scale sat rather than the actual game plan. Moving up, in his words, is a comfort thing — a chance to focus on the fight instead of the weight cut. On paper it's a clean stylistic pairing: both men are proven action fighters who can take a scrap anywhere it goes.

The Long Road to 12 Fights

Nobody handed Quarantillo anything. He went through The Ultimate Fighter house in 2015 without landing a contract, then spent four years grinding the regional circuit before a third-round win over Kamuela Kirk on Dana White's Contender Series finally unlocked the door. He described that gap as one of the most challenging stretches of his life — and admitted he never built a backup plan. It was the UFC or serving tables, and he put every egg in the one basket.

The Ferreira matchup is a genuine test. The Brazilian sits at 19-7 with seven submissions and five knockouts, and like Quarantillo he's deep into his career's back nine. Both men are coming off tough nights — Quarantillo was stopped by Cub Swanson via third-round TKO, while Ferreira was finished by Alexander Hernandez inside two rounds. Neither is ranked, which means this is a fight about relevance as much as anything else.

Building Something in Tampa

Quarantillo's motivations have shifted since his highlight-reel-hunting early days. Now a husband and father, he says everything runs through his family's future. Beyond the cage, he's building a legacy at his Tampa gym, Gracie PAC, where he name-checked teammates Will Rentz, David Macias, Ali Abouzalam and Blake Smith as UFC-ready prospects. He wants a team good enough to get fighters signed, paid and out before the damage piles up.

He's candid about why he thinks he can teach it. Quarantillo doesn't consider himself naturally gifted — he credits hard work for getting him to 11-plus UFC fights, and figures that makes him the perfect blueprint for anyone willing to follow it. New division, new chapter, same fighter. On Saturday, under the APEX lights, he plans to prove Billy Q hasn't changed a bit.