LAS VEGAS (AP) — Floyd Mayweather Jr. and Manny Pacquiao weighed in below the welterweight limit Friday before a packed arena of screaming, singing fans anticipating the landmark bout.

One day before Mayweather and Pacquiao finally meet in the richest event in boxing history, they took the stage in an MGM Grand arena filled with 11,500 fans enjoying the public’s best chance to see the fighters in person.

A beaming Pacquiao (57-5-2, 38 KOs) stepped on the scales first and weighed in at 145 pounds — two below the welterweight limit. Mayweather (47-0, 26 KOs) followed and weighed in at 146 pounds.

The fighters betrayed few emotions in their staredown, keeping with the impersonal nature of the promotion.

But Pacquiao also said, “Thank you” to Mayweather, who said he didn’t hear it.

“(I was) thanking him for the fans that the fight will happen,” Pacquiao said. “I think, I believe that the fight must happen because the fans deserve it.”

Sections of the crowd roared and booed for both fighters, although the majority appeared to support Pacquiao, who raised both arms to the crowd with finger V’s for victory. Mayweather was booed repeatedly when his image appeared on the arena scoreboards, but he also acknowledged his healthy cheering section with waves and a raised fist.

“I’ve dedicated myself to the sport of boxing for over 20 years, and I’m ready,” Mayweather said.