Alex Castro
UFC DebutNickname“The OG”
Record
Streak
W2
- Fighting out of
- Guam, Northern Mariana Islands
- Born
- United States
- Camp
- Guahan Top Team
- Weight class
- Lightweight
Before the UFC
Alex Castro makes their UFC debut
Our striking, grappling, and schedule metrics are measured from UFC fights, so they come online after this bout. Here is the career they bring in — and how live the opposition has been.
Pre-UFC opposition
StrongOpponents' combined record
170-103-4
.623 win rate
Winning-record opponents
12 of 13
carried winning pro records
Pro bouts faced
19
13 opponents with records on file
A descriptive read of the non-UFC slate from opponents’ full career pro records — not a UFC-grade Schedule Score.
UFC fight history
No UFC bouts on record yet.
Outside the UFC
across 19 bouts · 15 promotions · wins by 5 KO · 3 sub · 2 decPXC · Geran Haga · Brawl · PXC 19 · Trench Warz 11 +10
| Res | Opponent | Outcome | Finish | Rd | Time | Promotion | Date |
|---|---|---|---|---|---|---|---|
| W | Takumi Ishihara | KO/TKO | Elbows | R1 | 5:50 | Brawl | Oct 13, 2023 |
| W | Tony Reyes7-10 | Decision | Unanimous | R3 | 5:00 | PXC | Mar 3, 2012 |
| L | KO/TKO | Corner Stoppage | R1 | 5:00 | PXC | Aug 20, 2011 | |
| L | Harris Sarmiento36-26 | Decision | Unanimous | R3 | 5:00 | PXC | Jun 11, 2011 |
| W | Ian Dela Cuesta11-10 | Submission | Guillotine Choke | R1 | 4:20 | PXC | Jan 21, 2011 |
| W | Ji Ho Hwang7-6 | Submission | Rear-Naked Choke | R3 | — | PXC 19 | May 1, 2010 |
| W | Fasi Jesse9-4 | Submission | Guillotine Choke | R1 | 3:19 | Trench Warz 11 | Dec 18, 2009 |
| L | Joe Taimanglo24-9-1 | Decision | Unanimous | R3 | 5:00 | PXC 18 | Sep 19, 2009 |
| L | Tomonori Taniguchi | KO/TKO | Punches | R1 | 2:30 | PXC 17 | Mar 27, 2009 |
| L | Micah Tobias | KO/TKO | Knees | R2 | 0:00 | PXC 16 | Nov 21, 2008 |
| L | Joe Taimanglo24-9-1 | Submission | Rear-Naked Choke | R3 | 0:00 | PXC 15 | Jul 25, 2008 |
| L | Yoichi Fukumoto19-11-1 | Submission | Armbar | R2 | 0:00 | Geran Haga | May 28, 2007 |
| L | Mark Holst12-6 | Submission | Triangle Choke | R2 | 1:51 | Geran Haga | Feb 9, 2007 |
| W | Josh Hayes | KO/TKO | Punches | R1 | 0:00 | PXC 9 | Oct 13, 2006 |
| W | Kurt Guerrero | KO/TKO | — | R1 | 0:49 | PXC 8 | Jul 28, 2006 |
| L | Kyle Miyahara5-1-1 | KO/TKO | Kicks | R3 | 0:00 | PXC 7 | Apr 28, 2006 |
| W | Chris Duenas5-3 | KO/TKO | Head Kick | R3 | — | PXC 5 | Sep 22, 2005 |
| W | Rob Gutierrez | Decision | — | R3 | 5:00 | PXC 4 | Jan 14, 2005 |
| W | Dave Pangelinan2-1 | KO/TKO | Punches | R1 | — | PXC 3 | Aug 28, 2004 |
Non-UFC bouts (regional/other promotions) and Dana White’s Contender Series — shown for context only, excluded from Schedule Score, striking/grappling rates, and every UFC-scoped metric.