Tomorrow night UFC 155 will go down at the MGM Grand Garden Arena in Las Vegas, NV. UFC Heavyweight champion Junior Dos Santos will try to once again knock out challenger Cain Velasquez who he took the belt from at UFC On Fox 1. Lightweights Jim Miller and Joe Lauzon will battle in an effort to get back "in the mix." And Middleweight Chris Leben will return after a year long suspension.

Tonight, The weigh-ins for UFC 155 will start at 7 pm EST (4 pm PST). You can watch them live here or on FUEL TV. Let us know what you think in the comments.

Main Card:

Junior dos Santos (239) vs. Cain Velasquez (240)
Jim Miller (156) vs. Joe Lauzon (156)
Tim Boetsch (186) vs. Constantinos Philippou (186)
Yushin Okami (184) vs. Alan Belcher (186)
Chris Leben (185) vs. Derek Brunson (185)

Preliminary Card:

Brad Pickett (136) vs. Eddie Wineland (135)
Erik Perez (136) vs. Byron Bloodworth (136)
Melvin Guillard (155) vs. Jamie Varner (155)
Michael Johnson (154) vs. Myles Jury (155)
Todd Duffee (249) vs. Philip De Fries (245)
John Moraga (126) vs. Chris Cariaso (125)
Max Holloway (145) vs. Leonard Garcia (146)