text: Floyd Mayweather lacks class and does not act in the manner befitting a champion, according to Marvin Hagler. Mayweather is the richest sportsman in the world, nicknamed 'Money' as much for his ostentatious displays of wealth as his actual bank balance. Earlier this year Mayweather posted a picture to various social media sites showing him stood in front of a fleet of super cars and a private jet. Floyd Mayweather performs at a media workout with his uncle Roger on the pads in Las Vegas . Mayweather is not shy when it comes to sharing pictures of his wealth on social media . Mayweather has posted pictures of himself counting money and of his expensive timepiece . Hagler, speaking at the Laureus Sports Awards on the 30th anniversary of his blockbuster fight with Thomas Hearns, said he is in danger of alienating fans. 'It's not class and really no way for a champion to act,' he said. 'If you have the skills you don't need to impress everybody by being a show-off. Then when you get beat, the public stays behind the winner instead of with you when you were the champion.' Hagler's fight with Hearns is widely considered to be one of the finest bouts in history but he warned Mayweather's £$300million showdown with Manny Pacquiao could be a dud. The two best pound-for-pound fighters will finally meet in Las Vegas on May 2. 'Mayweather can put you to sleep,' Hagler added. 'Just by boxing and moving around and no excitement and Manny could be more on the defensive side rather than the offensive side so it might be boring.' Marvin Hagler believes Mayweather lacks class and puts people to sleep with his performances . Hagler (right) was speaking on the anniversary of his epic three-round fight against Thomas Hearns (above)
target: Floyd Mayweather takes on Manny Pacquiao in Las Vegas on May 2 .
  He is the richest sportsman in the world and will earn $180m next month .
  But he makes no attempt to conceal his wealth on social media .
  And Marvin Hagler claims his behaviour does not befit a world champion .