Cerrone was the first person to weigh-in at the Palms Casino Resort. He looked in great shape, weighing in at 170 pounds — one pound under the limit for a non-title welterweight bout. 

McGregor came in a little over 30 minutes after the weigh-ins began. He shook the hand of the head of the Nevada State Athletic Commission Bob Bennett before disrobing. The former two-division world champion stepped onto the scale and came in at an identical 170 pounds to make the main event official. You could see McGregor put on a lot of size and looks to be in phenomenal shape. 

McGregor (21-4) returns for the first time in 15 months. He lost by fourth-round submission to lightweight champion Khabib Nurmagomedov at UFC 229 in October 2018. UFC President Dana White said this week that a McGregor victory would net him another crack at the 155-pound title and taking on the winner of the Nurmagomedov vs. Tony Ferguson bout at UFC 249 on April 18. 

Cerrone (36-13, one no-contest) looks to finally get over the hump and win the big one. The 36-year-old comes in on a two-fight losing streak. The fan favorite lost to Ferguson by second-round TKO at UFC 239 and got stopped by Justin Gaethje in the first-round in September.

There was one fighter who missed weight, as women's strawweight Alexa Grasso weighed in at 121.5 pounds — 5.5 pounds overweight for her scheduled main card bout against Claudia Gadelha.

Here are the UFC 246 weigh-in results:

Main card

• Conor McGregor (170) vs. Donald Cerrone (170; Welterweight 
• Holly Holm (135.5) vs. Raquel Pennington (136); Women's Bantamweight 
• Aleksei Oleinik (238) vs. Maurice Greene (243); Heavyweight 
• Cláudia Gadelha (115.5) vs. Alexa Grasso (121.5); Women's Strawweight 
• Anthony Pettis (155.5) vs. Carlos Diego Ferreira (155.5); Lightweight 

Preliminary card 

• Roxanne Modafferi (125) vs. Maycee Barber (126); Women's Flyweight 
• Andre Fili (145.5) vs. Sodiq Yusuff (146); Featherweight 
• Drew Dober (155.5) vs. Nasrat Haqparast (156); Lightweight 
• Sabina Mazo (126.2) vs. JJ Aldrich (125.5); Women's Flyweight 
• Tim Elliott (125.5) vs. Askar Askarov (126); Flyweight 
• Brian Kelleher (136) vs. Ode Osbourne (135); Bantamweight 
• Aleksa Camur (204) vs. Justin Ledet (205); Light Heavyweight