Boxing fans hoping to attend the weigh-in for the welterweight showdown between Floyd Mayweather and Manny Pacquiao on May 2 must buy advance tickets. The vast numbers expected to attend the eve-of-fight ritual at the MGM Grand Garden Arena has prompted fight organisers to take the step of charging for entry to the event. Tickets will cost £6.60 and will go on sale through MGM Resorts call centre and box office on Friday at 8pm with all funds raised going to the charities chosen by Mayweather and Pacquiao - Susan G. Komen and the Cleveland Clinic Lou Ruvo Center for Brain Health. Floyd Maywetaher is looking to make it 49-0 with a win against the hard-hitting Filipino fighter . 'The weigh-in is always the grand finale of fight week activities,' said Mayweather Promotions chief executive Leonard Ellerbe. 'And with the massive interest in this fight, the number of fans looking to attend the official weigh-in is going to be something we've never seen before. 'We're excited to be able to use the enthusiasm around this event to provide donations to two very deserving charities.' Manny Pacquiao has wanted this fight for years and will be the toughest opponent that Mayweather has faced . A mere 500 tickets were made available to the public for the clash between the two best fighters of their generation. These sold out in minutes with resale prices on secondary seller StubHub ranging from £3,900 to £85,000 on Friday morning. Concerned by the prospect of mass attendance at the weigh-in by the hundreds of thousands of fans expected to descend on Las Vegas for fight weekend, organisers opted to charge for seats, which will be allocated. The American and his opponent are preparing for the biggest and lucrative fight in the sports history .
Thousands of fans expected to turn up to the MGM Arena in Las Vegas . To watch the weigh-in, spectators will need to purchase advance tickets . The tickets can be bought on Friday with all the money going to charity . READ: Mayweather vs Pacquiao tickets sell out within 60 seconds . READ: Mayweather vs Pacquiao purse could hit $300m .