All 22 fighters successfully made weight on Tuesday in Oklahoma City, Okla., making official UFC Fight Night 19, which airs live on Spike TV on Wednesday.

Nate Diaz originally weighed in a half pound over the limit at 156.5, but registered a weight of 156 on his second attempt. Diaz’ opponent, knockout artist Melvin Guillard, exited the scale at 155 even. The lightweights stood face-to-face in an intense staredown and did not shake hands immediately after.

Lightweights Gray Maynard (155.5) and Roger Huerta (156) had a much friendlier meeting, as the fighters smiled and embraced after taking to the scale.

UFC Fight Night 19 Weigh-in Results:
Nate Diaz (156) vs. Melvin Guillard (155)
Gray Maynard (155.5) vs. Roger Huerta (156)
Carlos Condit (171) vs. Jake Ellenberger (170.5)
Nate Quarry (184) vs. Tim Credeur (186)
Steve Cantwell (206) vs. Brian Stann (205.5)
Chris Wilson (171) vs. Mike Pyle (170)
Brock Larson (171) vs. Mike Pierce (169.5)
Jay Silva (185) vs. CB Dollaway (186)
Sam Stout (156) vs. Phillipe Nover (155.5)
Jeremy Stephens (155.5) vs. Justin Buchholz (155.5)
Ryan Jensen (186) vs. Steve Steinbeiss (185.5)