LAS VEGAS - Manny Pacquiao warned Floyd Mayweather he has been honing his killer instinct, as he was welcomed to Las Vegas by a cheering horde of supporters on Tuesday.
A day after wrapping up his Los Angeles training camp, the Filipino superstar delighted hundreds of fans at a rally in Sin City as the final countdown to his career-defining "Fight of the Century" began.
Most bookmakers have made the unbeaten Mayweather the favourite for Saturday's eagerly anticipated welterweight bout at the MGM Grand, the most lucrative in boxing history.
But Pacquiao told reporters he is revelling in his underdog status, as he spoke excitedly about the prospect of finally stepping into the ring to face Mayweather.
"My confidence is different than for other fights. I am not nervous. I am excited," he said.
"I have something to prove. I like being the underdog because my killer instinct and my focus is there," he added, describing the bout as "one of the most important fights in my boxing legacy".
"I want to make it a good result," Pacquiao said. "My goal is to win."
The Filipino was all smiles as he took the stage in a cavernous room at the Mandalay Bay Hotel's convention centre to greet hundreds of flag-waving Philippine supporters.
Pacquiao's arrival was preceded by Philippine singers and folk dancers, with a rousing rendition of the national anthem and a music video played on giant screens that featured the boxer, politician and singer performing his new song.
After taking the stage with his long-time trainer Freddie Roach, Pacquiao had to wait several minutes for the roar to die down before he assured the crowd of a victory in Saturday's world title mega bout.
"Are you excited?" asked Pacquiao, who was wearing a white "MP" T-shirt and light brown pants. "Don't be nervous. Saturday I am going to win the fight, so relax. I am so excited for Saturday."
Afterwards, he told reporters that the timing is right for a fight of this magnitude.
"It is the right time for this fight to happen," Pacquiao said.
"Even if they are not boxing fans, people really want to watch this fight, so it is the right time."
He said the unbeaten Mayweather is not the most dangerous boxer he has faced, but will be a difficult opponent to hit.
"I can't say he is the most dangerous fighter. I already fought (Oscar) De La Hoya and (Juan Manuel) Marquez, but he is one of the most difficult."