UFC 51: Super Saturday
| Sport: | MMA |
| Promotion: | UFC |
| Date: | Feb. 5, 2005 |
| Venue: | Mandalay Bay Events Center |
| City: | Las Vegas, Nevada |
| Broadcast: | Pay-Per-View |
Main Event
Light Heavyweight Tito Ortiz def. Vitor Belfort
Split decision () at 5:00 of Round 3
Preliminary Card
Middleweight David Loiseau def. Gideon Ray
TKO (doctor stoppage) () at 5:00 of Round 1