Velasquez vs. Santos official; complete UFC 166 weigh-in results

The main event of the evening is the trilogy fight challenger Junior dos Santos and UFC heavyweight champion Cain Velasquez.

Main Card (Pay-per-view, 10 p.m. ET)

-Cain Velasquez (241) vs. Junior dos Santos (240)

-Daniel Cormier (224) vs. Roy Nelson (249)

-Gilbert Melendez (156) vs. Diego Sanchez (156)

-Gabriel Gonzaga (257) vs. Shawn Jordan (255)

-John Dodson (125) vs. Darrell Montague (126)

Prelim Card (FOX Sports 1, 8 p.m. ET)

-Tim Boetsch (186) vs. C.B. Dollaway (186)

-Hector Lombard (169) vs. Nate Marquardt (171)

-Jessica Eye (135) vs. Sarah Kaufman (135)

-K.J. Noons (156) vs. George Sotiropoulos (155)

Prelim Card (Facebook, 6 p.m. ET)

-Adlan Amagov (171) vs. T.J. Waldburger (170.5)

Tony Ferguson (155) vs. Mike Rio (156)

-Andre Fili (148.5)* vs. Jeremy Larsen (145.5) *

-Kyogi Horiguchi (135) vs. Dustin Pague (135)

*Andre Fili was given two hours to cut to the featherweight max of 146 pounds, but elected to not re-weigh. He forfeits 20 percent of his purse to Larsen.