Professional boxers will compete at the Rio de Janeiro Olympics after the international boxing association AIBA approved a constitutional change.
AIBA boss Ching-Kuo Wu said the change of the AIBA constitution was approved with 95% in favour, paving the way for professionals to fight for medals for the first time at the Olympics starting on 5 August.
"We approved it and now they can compete," he said.
The move has also earned a lot of criticism as many argue it would be unfair to amateur boxers who have trained for the Games for years and who may now have to make way for the professionals.
Under Wu's leadership, AIBA set up the semi-professional World Series Boxing (WSB) in 2011 in which fighters earned money competing for city-based teams. He also introduced women's boxing at the Olympics in London in 2012.
Some of those WSB boxers have already secured places at the Rio Games through official qualifying tournaments.
Former world heavyweight champion Mike Tyson, who as an amateur won gold at the 1981 and 1982 Junior Olympic Games, has branded the move "ridiculous".
"It's ridiculous, it's foolish, and some of the pro fighters are going to get beat by the amateurs. It's just going to happen, I really believe that," the 49-year-old said last week.
He said the three rounds in the Olympics would work in favour of the amateurs, with professionals used to fighting as many as 12 rounds.
Northern Ireland's Carl Frampton, a former amateur who has won WBA and IBF world title belts at super-bantamweight, said allowing professionals into the Olympics was 'ridiculous'.
"They're two different sports. It's like a badminton player playing tennis," he said on Twitter.
Amateur boxing has had its share of Olympic champions who have gone on to become top professionals, among them Muhammad Ali, Joe Frazier, George Foreman, Lennox Lewis, Oscar De La Hoya and Vladimir Klitschko.
Pros boxers being allowed to fight in Olympics is ridiculous! They're two different sports. It's like a badminton player playing tennis— Carl Frampton MBE (@RealCFrampton) June 1, 2016