Charles Oliveira made quick work of Justin Gaethje Saturday at the Footprint Center in Phoenix, Arizona, winning by submission at 3:22 of the first round.

The former lightweight champion, who was stripped of his belt after missing championship weight Friday by a half pound, becomes the division's No. 1 contender and will compete for the vacant title in his next fight.

In the co-main event, Carla Esparza did just enough versus Rose Namajunas to win via split decision and regain the strawweight title she first won eight years ago in the finale of the 20th season of "The Ultimate Fighter."

UFC 274 live blog

UFC 274 main card full results

Lightweight: Charles Oliveira def. Justin Gaethje by submission (rear naked choke) at 3:22 of R1
Strawweight: Carla Esparza def. Rose Namajunas by split decision (47-48, 49-46, 48-47)
Lightweight: Michael Chandler def. Tony Ferguson by KO (front kick) at 0:17 of R1:

Light Heavyweight: Ovince Saint Preux def. Maurício Rua by split decision (29-28, 28-29, 30-27)

Welterweight: Randy Brown def. Khaos Williams by split decision (29-28, 28-29, 29-28)
Lightweight: Donald Cerrone vs. Joe Lauzon

UFC 274 preliminary card results

Welterweight: Francisco Trinaldo def. Danny Roberts by unanimous decision (28-28, 30-26, 30-27)
Catchweight (146.5 lbs): Macy Chiasson def. Norma Dumont by split decision (30-27, 28-29, 30-27)
Flyweight: Brandon Royval def. Matt Schnell by submission (guillotine) at 2:14 of R1:

Heavyweight: Blagoy Ivanov def. Marcos Rogério de Lima by unanimous decision (29-28, 29-28, 29-28)

UFC 274 early preliminary card full results

Welterweight: André Fialho def. Cameron VanCamp by KO (punch) at 2:35 of R1:

Flyweight: Tracy Cortez def. Melissa Gatto by unanimous decision (29-28, 29-28, 29-28)
Flyweight: C.J. Vergara def. Kleydson Rodrigues by 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)