Manny Pacquiao 's preparations for his $ 300million ( £200m ) fight with Floyd Mayweather continue to push him to the limit as he was put through a gruelling 20-minute abs workout . Pacquiao was joined by fans for the session , before going five hard rounds against two different partners on his first day of sparring ahead of the mega-fight in Las Vegas on May 2 . 'When Manny threw out the first punch it felt like opening day of Irish Spring Training , ' joked trainer Freddie Roach . 'Manny looked so fresh today . I 'm very happy with what he showed me . Many Pacquiao was joined by fans in the 20-minute abs session as they tried to keep up with him . The PacMan also wet five hard rounds against two different partners on his first day of sparring . Pacquiao 's preparations for his $ 300million ( £200m ) fight with Floyd Mayweather continue to push him . 'You could n't tell he had been away from the ring since the [ Chris ] Algieri fight in November . Manny is on fire in the gym . I am confident May 2 will be celebrated for years to come at St. Manny 's Day - the day he drove Mayweather out of boxing . ' Mayweather has been going back to basics , chopping wood 'Rocky style ' as the pound-for-pound king emulated past greats such as Muhammad Ali . Pacquiao was approached unannounced by an anti-doping examiner at the house he is renting in Los Angeles just days ago , and admitted he was glad his first day of sparring had finally arrived . 'After 13 days of strength and conditioning and boxing drills at Wild Card , plus weeks more of working out in the Philippines in February , it was great to finally put on the headgear and spar , ' he said . 'My sparring partners gave me good work today . They were perfect for testing the strategy Freddie and I have developed to beat Floyd Mayweather . I was very happy with my stamina and speed today . ' Pacquiao was paid a surprise visit by an anti-doping examiner on Sunday to take a drug test . Pacquiao has a plaster applied after giving a blood sample to the examiner on a surprise visit . VIDEO Mayweather and Pacquiao camps exchange verbal blows .
Manny Pacquiao is preparing for his $ 300m ( £200m ) mega-fight . Pacquiao was put through a 20-minute abs workout session . Floyd Mayweather and Pacquiao will meet in St. Manny 's on May 2 . Trainer Freddie Roach : ' I am confident May 2 will be celebrated for years to come at Las Vegas Day - the day he drove Mayweather out of boxing ' READ : Boxing fans pick $ 1m emerald belt for winner of historic fight . CLICK HERE for all the latest Mayweather vs Pacquiao news .