Sean O'Malley witnessed a meteoric rise in professional mixed martial arts and created a niche for himself in a brief time. He made his professional debut in 2015 and spent his initial years competing in multiple fight promotions. O'Malley entered The Ultimate Fighter: A New World Champion Finale on December 1, 2017, and faced Terrion Ware. He won the bout by a unanimous decision and progressed further in the UFC.
After establishing a long winning streak, O'Malley dislodged Aljamain Sterling from the bantamweight throne at UFC 292. He made quick work of Sterling by knocking him out in the first round to win the title. O'Malley defended it once against Marlon Vera at UFC 299 before dropping it to Merab Dvalishvili at UFC 306. He is slated to return to the octagon to face Dvalishvili in a rematch at UFC 316.
Sean O'Malley's age and fighting debut
Sean O'Malley was 21 years of age when he made his professional mixed martial arts debut. Born on October 24, 1994, he made his professional debut on March 6, 2015, against Josh Reyes at Intense Championship Fighting 17.
Sean O'Malley Record
Sean O'Malley has a professional MMA record of 18 wins, two losses, and one no-contest as of May 21, 2025. He has 12 knockout, one submission, and five decision victories under his belt. O'Malley has suffered one loss by knockout and one by decision.
| 21 matches | 18 wins | 2 losses |
| By knockout | 12 | 1 |
| By submission | 1 | 0 |
| By decision | 5 | 1 |
| No contests | 1 | |
Last updated on May 21, 2025
FAQs on Sean O'Malley fighting age as a professional mixed martial artist
A. Sean O'Malley started kickboxing in 2011.
A. Sean O'Malley joined MMA just to make an impression on young female fans.
A. The amateur-level record of Sean O'Malley is seven wins and one loss.
A. Sean O'Malley made his professional MMA debut in 2015.
A. Sean O'Malley learned boxing at Hammer Boxing Center.
