WEC 51: Aldo vs. Gamburyan
- Bantamweight bout: Demetrious Johnson vs. Nick Pace
- Johnson defeated Pace via unanimous decision (30-27, 30-27, 30-27).
- Bantamweight bout: Antonio Banuelos vs. Chad George
- Banuelos defeated George via unanimous decision (29-28, 29-28, 30-27).
- Featherweight bout: Tyler Toner vs. Diego Nunes
- Nunes defeated Toner via unanimous decision (29-28, 29-28, 30-27).
- Lightweight bout: Chris Horodecki vs. Ed Ratcliff
- Horodecki defeated Ratcliff via split decision (28-29, 30-27, 30-27)
- Featherweight bout: Mike Brown vs. Cole Province
- Brown defeated Province via TKO (punches) at 1:18 of round 1.
- Lightweight bout: Zhang Tie Quan vs. Pablo Garza
- Zhang defeated Garza via submission (guillotine choke) at 2:26 of round 1. This bout aired on the live broadcast following the Torres/Valencia bout.
- Featherweight bout: Leonard Garcia vs. Mark Hominick
- Hominick defeated Garcia via split decision (29-28, 28-29, 29-28).
- Featherweight bout: Chan Sung Jung vs. George Roop
- Roop defeated Jung via KO (head kick) at 1:30 of round 2.
- Bantamweight bout: Miguel Torres vs. Charlie Valencia
- Torres defeated Valencia via submission (rear-naked choke) at 2:25 of round 2.
- Lightweight bout: Jamie Varner vs. Donald Cerrone
- Cerrone defeated Varner via unanimous decision (30-27, 30-27, 30-27)
- Featherweight Championship bout: Jose Aldo (c) vs. Manny Gamburyan
- Aldo defeated Gamburyan via KO (punches) at 1:32 of round 2 to retain the WEC Featherweight title.