UFC Fight Night 6.5: Ortiz vs Shamrock 3 – The Final Chapter
Preliminary card
- Welterweight bout:
Forrest Petz vs. Marcus Davis
- Davis wins by submission (guillotine choke) at 4:58 of round one. This bout was not aired on the broadcast.
- Welterweight bout:
Thiago Alves vs. 
John Alessio
- Alves wins by unanimous decision. All three judges score the bout 30–27. This bout was not aired on the broadcast.
- Middleweight bout: Rory Singer vs. Josh Haynes
- Singer wins by unanimous decision. All three judges score the bout 29–28. This bout was not aired on the broadcast.
- Welterweight bout:
Tony DeSouza vs. Dustin Hazelett
- DeSouza wins by submission (kimura) at 3:59 of round one. This bout was not aired on the broadcast.
- Middleweight bout: Nathan Marquardt vs. Crafton Wallace
- Marquardt wins by submission (rear naked choke) at 1:14 of round two. Wallace was a late replacement for Thales Leites, who experienced difficulties processing his visa in time for the bout.5 This bout was not aired on the broadcast.
Main card
- Light Heavyweight bout: Matt Hamill vs. Seth Petruzelli
- Hamill wins by unanimous decision. Judges score the bout 29–28, 30–27, and 29–28.
- Middleweight bout: Ed Herman vs. Jason MacDonald
- MacDonald wins by submission (triangle choke) at 2:40 of round one.
- Middleweight bout: Kendall Grove vs. Chris Price
- Grove wins by submission due to strikes at 3:59 of round one.
- Light Heavyweight bout: Tito Ortiz vs. Ken Shamrock
- Ortiz wins by TKO (strikes) at 2:24 of round one. Shamrock announces his retirement after the fight, although the retirement only lasted roughly a year and a half.