Osman Diaz
Vitals
Height, reach, and career background.
Record
Tap any fight for the breakdown.
WinDEC
UFC 313
8 Mar 2025
8 Mar 2025
Diaz won his first UFC fight by going the distance against Djorden Santos at UFC 313, taking a unanimous decision over three rounds.
Key moments
- Won by unanimous decision after three full rounds.
- It was Diaz's first UFC win.
- The result also marked Santos's UFC debut.
23 Nov 2024
17 May 2024
8 Mar 2024
WinKO
Opponent: Bruno AssispunchesR1
LFA 127
25 Mar 2022
25 Mar 2022
Diaz answered the Pyfer setback in emphatic fashion by knocking out Bruno Assis late in the opening round of an LFA main event to win the vacant middleweight title.
Key moments
- Knocked out Assis at 4:53 of round one in the LFA 127 main event.
- Won the vacant LFA middleweight championship with the finish.
- The victory re-established Diaz as a title-level regional middleweight after DWCS.
30 Oct 2021
30 Oct 2020
WinSUB
Opponent: Andre Walkerrear-naked chokeR1
Bellator 228
28 Sep 2019
28 Sep 2019
Diaz showed a different part of his game at Bellator 228 by taking Andre Walker's back and finishing with a rear-naked choke in the opening round. That mattered because most of his résumé leans on knockouts, so the win reinforced that he could still close the door with grappling when the opportunity appeared.
Key moments
- Submitted Walker with a rear-naked choke at 3:05 of round one.
- The finish came on the Bellator 228 card in Inglewood.
- It gave Diaz his second Bellator win in 2019.
WinTKO
Opponent: Christopher ReyespunchesR1
Bellator 214
26 Jan 2019
26 Jan 2019
Diaz returned from the quick Fight Club OC loss by stopping Christopher Reyes late in the first round on the Bellator 214 undercard.
Key moments
- Stopped Reyes with punches at 4:15 of round one.
- The bout took place on the Bellator 214 card in Los Angeles.
- It snapped Diaz's one-fight skid and started a two-fight Bellator winning stretch.
15 Feb 2018
7 Dec 2017
14 Jun 2015
The Read
Style, strengths, and defining traits.
Diaz is a well-traveled veteran middleweight who turned pro in 2015 and built his resume mostly on the Southern California regional circuit before reaching the UFC in his mid-30s; seven of his ten wins have come by knockout, the profile of a fighter who trades in the pocket rather than grinds out decisions.
His UFC run has been uneven: he beat Djorden Santos on the scorecards at UFC 313 in his second Octagon appearance, but has otherwise lost twice by knockout, including a second-round stoppage to Ateba Gautier at UFC 328 that dropped him to 10-4.