Manny Pacquio and Timothy Bradley make weight in Vegas

Manny Pacquiao and Timothy Bradley both comfortably made the weight for Saturday's showdown in Las Vegas.

The pair squared up to each other before a raucous crowd of a few thousand fans at the MGM Grand Garden Arena for the weigh-in, with both men well within the 147-pound limit.

Pacquiao tipped the scales at 145.5lbs in his final fight before he hangs up his gloves to pursue a political career in the Philippines.

The 37-year-old was half a pound heavier than he was in his last fight against Floyd Mayweather 11 months ago.

Bradley, who won a controversial points decision against Pacquiao in 2012 before losing the rematch two years later, was a pound heavier at 146.5.

"Expect more action that the last fights we had," promised Pacquiao, who boasts a 57-6-2 record and has won world titles from flyweight to super welterweight in a professional career stretching back to 1995.

Bradley, meanwhile, looked in formidable shape as he stripped down for the cameras.

The 32-year-old from California shrugged off catcalls from the largely pro-Pacquiao crowd, telling the audience: "I think there's going to be a lot of disappointed fans tomorrow night."

Bradley, whose sole defeat in 35 fights was to Pacquiao, is expecting an explosive start from his nemesis.

"He's going to come out like a bat out of hell and try to take my head off," said Bradley, who teamed up with veteran trainer Teddy Atlas for his recent win over Brandon Rios in November.

Atlas and Bradley have been poring over tapes of Pacquiao's defeat to Mayweather last year, and his crushing knockout by Juan Manuel Marquez in 2012 as they attempt to concoct a game plan to beat the Filipino.

But Atlas is under no illusions about the scale of the challenge represented by Pacquiao.

"When you're competing against someone as good as Manny - he wins a fight because of pure talent," Atlas said.

"The combination of speed and power that he has is uncommon. He's a freak."