Gil Philip Castillo is an American mixed martial arts fighter studying under Cesar Gracie. His UFC debut was in UFC 33 with a loss to Dave Menne via Unanimous Decision. He then went on to a win at UFC 35 against Chris Brennan by Unanimous Decision, and gained his biggest claim to fame with his fight against Matt Hughes at UFC 40, which he lost via cut stoppage in the first round.
MMA record[]
| 8–5–0 (wins–losses–draws)
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| 2006-04-01 | Loss | Jake Ellenberger | TKO | IFC Cage Combat | Round 1 1:30 | ||
| 2005-10-14 | Win | Steve Ramerez | TKO (Punches) | WEC 17 Halloween Fury 4 | Round 2 4:01 | ||
| 2004-05-21 | Loss | Ryan Schultz | Decision (Majority) | WEC 10 Bragging Rights | Round 3 5:00 | ||
| 2003-10-10 | Loss | Renato Verissimo | TKO (Corner Stoppage) | ROTR 4 Rumble on the Rocks 4 | Round 2 5:00 | ||
| 2003-03-27 | Win | Chris Williams | TKO (Corner Stoppage) | WEC 6 Return of a Legend | Round 1 5:00 | ||
| 2002-11-22 | Loss | Matt Hughes | TKO (Cut) | UFC 40: Vendetta | Round 1 5:00 | For UFC Welterweight title | |
| 2002-01-11 | Win | Chris Brennan | Decision (Unanimous) | UFC 35: Throwdown | Round 3 5:00 | ||
| 2001-09-28 | Loss | Dave Menne | Decision (Unanimous) | UFC 33: Victory in Vegas | Round 5 5:00 | For UFC Middleweight title | |
| 2001-07-18 | Win | Nathan Marquardt | Decision (Unanimous) | IFC 14 Warriors Challenge 14 | Round 5 5:00 | ||
| 2001-04-29 | Win | Joe Hurley | Decision (Unanimous) | KOTC 8 Bombs Away | Round 3 5:00 | ||
| 2000-10-11 | Win | Raymond Mansfield | Submission (Omo Plata) | IFC Warriors Challenge 10 | Round 1 | ||
| 2000-06-14 | Win | Robert Ferguson | Decision (Unanimous) | IFC Warriors Challenge 8 | N/A | ||
| 2000-03-25 | Win | Dennis Muehy | Submission (Armbar) | IFC Warriors Challenge 6 | Round 1 1:17
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