Charles Oliveira quickly succeeded Saturday with Justin Gaethje at the Footprint Center in Phoenix, Arizona, winning by a 3:22 first-round submission.
The former lightweight champion, who was stripped of his belt after losing the half-pound championship title on Friday, is becoming No. 1 in the division and will fight for the vacant title in his next fight.
In the co-main event, Carla Esparza did enough against Rose Namajunas to win by split decision and regain the straw category title she first won eight years ago in the finale of the 20th season of “The Ultimate Fighter”.
UFC 274 live blog
Full results of the UFC 274 main card
Lightweight: Charles Oliveira def. Justin Gaeth by submission (back naked choking) at 3:22 R1
Straw category: Carla Esparza def. Rose Namajunas split decision (47-48, 49-46, 48-47)
Lightweight: Michael Chandler def. Tony Ferguson KO (front kick) at 0:17 R1:
light heavyweight category: Ovince Saint Preux def. Maurício Rua by split decision (29-28, 28-29, 30-27)
Welter: Randy Brown def. Khaos Williams split decision (29-28, 28-29, 29-28)
Easy: Donald Cerrone vs. Joe Lawson
UFC 274 Preliminary Card Results
welterweight category: Francisco Trinaldo def. Danny Roberts unanimously (28-28, 30-26, 30-27)
Catchweight (146.5 lbs): Macy Chiasson def. Norma Dumont split decision (30-27, 28-29, 30-27)
Fly Category: Brandon Royval def. Matt Schnell Surrender (Guillotine) at 2:14 R1:
Heavyweight: Blagoy Ivanov def. Marcos Rogério de Lima by decisive decision (29-28, 29-28, 29-28)
UFC 274 early preliminary card full results
welterweight category: André Fialho def. Cameron VanCamp refused KO (kick) at 2:35 R1:
Fly category: Tracy Cortez def. Melissa Gatto by unanimous decision (29-28, 29-28, 29-28)
Fly category: CJ Vergara def. Kleydson Rodrigues split decision (29-28, 28-29, 29-28)
Strawweight: Lupita Godinez def. Ariane Carnelossi by unanimous decision (30-27, 30-26, 30-26)
Bantamweight: Journey Newson def. Fernie Garcia by unanimous decision (30-27, 30-27, 29-28)