By Jose M. Romero

For Fox Deportes

LAS VEGAS  — The fights are Saturday, but the hype reached a near fever pitch Friday afternoon at the official weigh-in for the Floyd Mayweather Jr.-Miguel Cotto and Saul “Canelo” Alvarez-“Sugar” Shane Mosley bouts.

The public was allowed into half of the MGM Grand Garden Arena to get a short glimpse of the pugilists, and fans of Mayweather Jr., Alvarez and Cotto roared for their man while Mosley seemed to have the fewest supporters.

Still, a good chunk of the crowd stuck around to see Mosley get re-weighed on the scale after he first checked in at 154 ½ pounds, a half-pound over the official limit. They even gave him a half-hearted cheer as he shrugged his shoulders.

The loudest cheers were for Cotto, then Alvarez. Mayweather Jr. got more boos than cheers, the polarizing figure that he is.

The staredown between Mayweather and Cotto lasted much longer than at the press conference for the two fighters on Wednesday. The two then exchanged words and the fans ate it up.

“I just told him, ‘When you’re facing Floyd Mayweather, you’re facing the best,” Mayweather told HBO’s Max Kellerman on the stage after the showdown, as boos rained down on him. “I look forward to going out there (Saturday, executing a game plan and being at my best.”

Mayweather weighed in at 151, the most he’s ever weighed for a fight, and Cotto checked in at 154.

“He looked kind of drained,” Mayweather said of Cotto.

Four weeks after the fight is over, Mayweather is off to serve a jail sentence.

Cotto’s side of the exchange between the two fighters was this: “He never faced anybody like Miguel Cotto before,” Cotto said. “I’m here to fight. If he wants to run, I‘m ready for that. If he wants to face me, I’m ready for that. I’m ready for anything.”

Mosley and Alvarez both weighed in at 154 pounds.

“I’m not going to try, I’m going to win,” Alvarez said.

Mosley blamed a different scale for his weight mishap. He knows not many believe he can beat Alvarez, the 21-year-old phenom from Mexico who is beloved in his home country.

“You don’t really to believe I’m going to beat him, but I know I’m going to beat him,” Mosley said. “It’s for me to believe and it’s going to happen.”