UFC Vegas 91: Matheus Nicolau vs. Alex Perez weigh-in results - How much do headliners officially weigh heading into upcoming clash?

UFC flyweight contenders Matheus Nicolau and Alex Perez are slated to battle it out in the headlining bout of UFC Vegas 91. The Fight Night is scheduled for this weekend at the UFC's APEX facility in Las Vegas, Nevada.

The official weigh-ins for the upcoming event took place on Friday, April 26, at the UFC Apex. Perez was the first fighter to step on the scale, weighing in at 126 pounds. Nicolau then weighed in at 125.5 pounds, half a pound below the 126-pound limit for their non-title flyweight bout.

In the co-main event of UFC Vegas 91, Ryan Spann is set to face off against Bogdan Guskov in a light heavyweight showdown. Spann weighed in at 205.5 pounds, while Guskov registered a weight of 204.5 pounds, officially confirming their bout.

The fight card will stream live on ESPN+ and UFC Fight Pass, beginning at 4 PM ET/1 PM PT on Saturday, April 27, in the United States. This aligns with an 8 PM GMT start time in the United Kingdom.

Meanwhile, the main card of UFC Vegas 91 is expected to commence around 7 PM ET/4 PM PT in the U.S., corresponding to 11 PM GMT in the U.K.

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Complete results for UFC Vegas 91: Matheus Nicolau vs. Alex Perez weigh-ins

Main Card

Matheus Nicolau (125.5) vs. Alex Perez (126): flyweight

Ryan Spann (205.5) vs. Bogdan Guskov (204.5): light heavyweight

Ariane da Silva (126) vs. Karine Silva (125.5): women's flyweight

Austen Lane (254.5) vs. Jhonata Diniz (255): heavyweight

Jonathan Pearce (146) vs. David Onama* (148.5): featherweight

Tim Means (171) vs. Uros Medic (171): welterweight

Preliminary Card

Rani Yahya (136) vs. Victor Henry (135.5): bantamweight

Austin Hubbard (156) vs. Michal Figlak (155): lightweight

Don’Tale Mayes (264) vs. Caio Machado (251.5): heavyweight

Marnic Mann (115.5) vs. Ketlen Souza (115.5): strawweight

James Llontop** (156.5) vs. Chris Padilla (154.5): lightweight

Ivana Petrovic (126) vs. Liang Na (126): women's flyweight

Gabriel Benitez (155) vs. Maheshate (155.5): lightweight

*Onama exceeded the featherweight limit by 2.5 pounds

**Llontop exceeded the lightweight limit by half a pound