LAS VEGAS — Even media assembled Friday morning to watch Canelo Alvarez and Terence Crawford officially weigh-in couldn’t see them step on the scale.

Alvarez and Crawford made weight in separate rooms at Fontainebleau Las Vegas from the 18 fighters scheduled to compete on their undercard Saturday night at Allegiant Stadium on Netflix (9 p.m. ET).

Crawford came in at a career-high 167½ pounds for his super middleweight debut. Alvarez also weighed 167½.

Organizers of the event didn’t offer an explanation as to why Crawford and Alvarez didn’t step on the Nevada State Athletic Commission scale in the same conference room as the other fighters.

All 20 boxers set to fight will participate in a ceremonial weigh-in scheduled to begin at 6 p.m. PT at T-Mobile Arena. That event is free to the public. Doors open at 5 p.m. PT.

Alvarez (63-2-2, 39 KOs), of Guadalajara, Mexico, will defend his Ring, IBF, WBA, WBC and WBO 168-pound championships against a fellow four-division champion. Crawford (41-0, 31 KOs), of Omaha, Nebraska, will fight for the first time above the junior middleweight limit of 154.

If Crawford wins, he’ll become the first male boxer in the four-belt era to become an undisputed champ in three divisions. He was previously the fully unified champ in the junior welterweight and welterweight divisions.

Alvarez, 35, is a marginal favorite over Crawford, 37, according to DraftKings. Crawford is ranked No. 3 on The Ring’s pound-for-pound list, five spots above Alvarez.

The official weights for the other nine bouts on the undercard: