| 2026-10-17 | UFC Fight Night: Buckley vs. Malott | Welterweight | Mike Malott def. Joaquin Buckley | KO (knee and punch) | 2 | 2:32 |
| 2026-05-09 | UFC 328: Chimaev vs. Strickland | Welterweight | Sean Brady def. Joaquin Buckley | Decision (unanimous) (30–25, 30–25, 30–27) | 3 | 5:00 |
| 2025-06-14 | UFC on ESPN: Usman vs. Buckley | Welterweight | Kamaru Usman def. Joaquin Buckley | Decision (unanimous) (49–46, 49–46, 48–47) | 5 | 5:00 |
| 2024-12-14 | UFC on ESPN: Covington vs. Buckley | Welterweight | Joaquin Buckley def. Colby Covington | TKO (doctor stoppage) | 3 | 4:42 |
| 2024-10-05 | UFC 307: Pereira vs. Rountree Jr. | Welterweight | Joaquin Buckley def. Stephen Thompson | KO (punch) | 3 | 2:17 |
| 2024-05-11 | UFC on ESPN: Lewis vs. Nascimento | Welterweight | Joaquin Buckley def. Nursulton Ruziboev | Decision (unanimous) (30–27, 30–26, 29–27) | 3 | 5:00 |
| 2024-03-30 | UFC on ESPN: Blanchfield vs. Fiorot | Welterweight | Joaquin Buckley def. Vicente Luque | TKO (punches) | 2 | 3:17 |
| 2023-10-07 | UFC Fight Night: Dawson vs. Green | Welterweight | Joaquin Buckley def. Alex Morono | Decision (unanimous) (30–27, 30–27, 30–26) | 3 | 5:00 |
| 2023-05-20 | UFC Fight Night: Dern vs. Hill | Welterweight | Joaquin Buckley def. André Fialho | TKO (head kick) | 2 | 4:15 |
| 2022-12-10 | UFC 282: Błachowicz vs. Ankalaev | Middleweight | Chris Curtis def. Joaquin Buckley | KO (punches) | 2 | 2:49 |
| 2022-09-03 | UFC Fight Night: Gane vs. Tuivasa | Middleweight | Nassourdine Imavov def. Joaquin Buckley | Decision (unanimous) (29–28, 29–28, 30–27) | 3 | 5:00 |
| 2022-06-18 | UFC on ESPN: Kattar vs. Emmett | Middleweight | Joaquin Buckley def. Albert Duraev | TKO (doctor stoppage) | 2 | 5:00 |
| 2022-02-19 | UFC Fight Night: Walker vs. Hill | Middleweight | Joaquin Buckley def. Abdul Razak Alhassan | Decision (split) (28–29, 29–28, 29–28) | 3 | 5:00 |
| 2021-09-18 | UFC Fight Night: Smith vs. Spann | Middleweight | Joaquin Buckley def. Antônio Arroyo | KO (punches) | 3 | 2:26 |
| 2021-01-16 | UFC on ABC: Holloway vs. Kattar | Middleweight | Alessio Di Chirico def. Joaquin Buckley | KO (head kick) | 1 | 2:12 |
| 2020-11-21 | UFC 255: Figueiredo vs. Perez | Middleweight | Joaquin Buckley def. Jordan Wright | KO (punches) | 2 | 0:18 |
| 2020-10-11 | UFC Fight Night: Moraes vs. Sandhagen | Middleweight | Joaquin Buckley def. Impa Kasanganay | KO (spinning back kick) | 2 | 2:03 |
| 2020-08-08 | UFC Fight Night: Lewis vs. Oleinik | Middleweight | Kevin Holland def. Joaquin Buckley | TKO (punches) | 3 | 0:32 |