Manny Pacquiao received a surprise visit from drug testers prior to his Fight of the Century with Floyd Mayweather . Pacquiao was approached unannounced by an anti-doping examiner at the house he is renting in Los Angeles where he is preparing to face Mayweather in Las Vegas on May 2 . Both fighters can expect to be tested under the US Anti-Doping Association programme to which they have both signed up . Manny 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 . Pacquiao was visited only four days after the packed red-carpet media event in LA which formally launched the build up to the $ 350million richest fight of all time . The inspector called at the house , where Pacquiao was relaxing with members of his team between work-outs with master trainer Freddie Roach at the fabled Wild Card Gym . The PacMan readily complied with tests for both blood – a process about which he had previously expressed his dislike – and urine . ‘ No problem , ’ he told the medic , with a smile . Earlier , his promoter Bob Arum had made it clear that Pacquiao had issued a $ 5m challenge to Mayweather with regard to the testing , and offered to surrender that amount should he fail the examination . In addition to the giving blood , Pacquiao also gave a urine sample during the test . Pacquiao and Floyd Mayweather can expected to be randomly tested before the bout on May 2 in Las Vegas . Arum explained : ‘ Manny proposed that if either of them did not pass a test , that man should pay the other $ 5m . ‘ Floyd ’ s team declined . Not because anybody here is afraid of the outcome but because they realised they could legally get a lot more if it happened . ‘ Fine with Manny . If Floyd fails we will be looking for much more compensation than $ 5m . ' Pacquiao has already been paid damages – reportedly in seven figures – after taking legal action for remarks made by members of the Mayweather team , when they began demanding drugs-testing , which inferred that he might have used performance enhancing drugs in the past . Under the US procedures , which comply with the World Anti-Doping Agency standards applied for the Olympics , both boxers must submit to random testing in the weeks leading up to the fight and to another immediately after the event . Pacquiao was happy to be filmed by a camera crew from the Philippines , who are documenting the build up . Pacquiao proposed that if either boxer failed a drug test they would have to pay the other $ 5million . Pacquiao has had to overcome an element of paranoia that a loss of blood prior to fights might weaken him in the ring . But he is so cool about testing now that he allowed video-taping of Sunday ’ s test by a Philippines camera crew which is filming virtually his every move between now and fight night in the MGM Grand Garden Arena . Mayweather has campaigned vociferously in the last two years for the implementation of random blood testing for all fights . However , with a split purse of up to $ 180m for Mayweather and $ 120m for Pacquiao at stake , it seems inconceivable that either man would even remotely risk detection . Pacquiao has been documenting his training , seen here going fr a road run on the streets of LA . Mayweather hits the speed bag as his training camp continues in his Las Vegas gym . Mayweather vs Pacquiao is widely considered to be one of the biggest boxing fights of all-time . VIDEO Mayweather and Pacquiao camps exchange verbal blows . Not all boxers make hundreds of millions of dollars for risking their lives in the ring . Compared with the most lucrative pickings ever which await Floyd Mayweather and Manny Pacquiao at the MGM Grand Garden Arena in Las Vegas on May 2 , our own Michael Watson was on a modest stipend when he climbed through the ropes to fight Chris Eubank . That London evening in 1991 ended with Watson suffering crippling brain damage . It is nothing short of a miracle , made possible by rapid and brilliant medical intervention , that Watson has survived to celebrate his 50th birthday , let alone along the way complete a London Marathon in six days with the ever-supportive Eubank for company . Michael Watson ( centre ) , pictured fighting Chris Eubank in 1991 , turned 50 on Sunday . The bout left Watson with crippling brain damage and there will be a fund-raining dinner to celebrate his 50th . To celebrate Watson ’ s half-century , which he turned on Sunday , a fund-raising dinner will be held in London next month to help pay for the constant care he needs . The Teenage Cancer Trust will benefit , also . David Haye and Joe Calzaghe will be among many star British boxers in attendance at The Park Lane Hotel on St George ’ s Day , April 23 , along with American legend Marvin Hagler . Tickets , at £275 each , are available from Geraldine Davies at michaelwatsonmbe @ aol.com .
Manny Pacquiao took drug tests at the gym he is currently in LA on Sunday . Anti - doping tests turned up unannounced taking both blood and urine . they hired a freelance camera crew to film Sunday 's test . READ : Fans join in with Pacquiao 's week 12 road workout . CLICK HERE for all the latest Pacquiao and Mayweather news .