Mickey Gall has withdrawn from UFC Vegas 121 due to medical issues that surfaced during fight-week medicals, the UFC announced Thursday. Luis Hernandez, who signed with the promotion earlier this month after a second-round rear-naked choke finish on Dana White's Contender Series, will step in on two days' notice to face Sedriques Dumas. The replacement marks one of the fastest turnarounds in Contender Series history, with Hernandez returning to the octagon just 11 days after his debut submission win over Hugo Guillon.
Mickey Gall has been forced off UFC Vegas 121 after failing fight-week medicals, the promotion announced Thursday, with Luis Hernandez stepping in on roughly two days' notice to face Sedriques Dumas.
Gall, a 34-year-old switch-stance welterweight fighting out of Kill Cliff FC, carries a 7-7 professional record and had been preparing for what would have been another octagon appearance before the medical issue ended his involvement. The six-foot-two fighter owns a 74-inch reach and has built his game around a busy submission attack, averaging 1.6 submission attempts per 15 minutes — among the higher rates in the division. He also connects at a 49 percent striking accuracy clip, landing 3.5 significant strikes per minute.

Hernandez slides into the spot after a rapid rise through Dana White's Contender Series, where he earned his UFC contract just 13 days before this bout with a second-round rear-naked choke finish over Hugo Guillon. He returns to the octagon a mere 11 days after that submission win, making this one of the shortest gaps between a Contender Series debut and a UFC appearance in the show's history.
Dumas, nicknamed "The Reaper," is a 31-year-old orthodox welterweight from the United States who trains with Team Remedy BJJ and MMA. Standing six-foot-two with a 79-inch reach, he holds a 10-5 record and averages 1.34 takedowns per 15 minutes, giving him a physical and grappling edge over many opponents.

Why it matters
- Hernandez faces a significant step up in competition on almost no notice, a true trial by fire for a fighter who signed days ago.
- Dumas gets a fresh opponent with an unknown UFC-level game tape, removing some preparation advantage on both sides.
- The late change reshuffles the UFC Vegas 121 card less than 48 hours before the event.

















