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the former world heavyweight boxing champion, and a man never far from the news, mike tyson is in south africa. tyson arrived in johannesburg on tuesday, he's in the country to promote a local boxing tournament and attend a gala dinner on wednesday where he will sign and auction off memorabilia to support a local charity. here, 'iron' mike was the guest of honour at a news conference at a joburg casino, the 41-year-old new yorker typically candid as the media got their chance with one of boxing's former greats. soundbite: (english) question: 'how come a great fighter like you never became a trainer to young up and coming fighters?' "it takes a lot of responsibility for that, i don't think i am responsible enough for that stuff. i still like to hang out and be with my friends and i don't think i am responsible enough. it takes a great deal of responsibility for somebody to respect you and leave their child with you and expect you to raise their child basically for ten hours or eleven hours a day, so i am not ready for that. i have a hard enough time just raising my children so to handle someone else's kids would just be overwhelming to me." supercaption: mike tyson, former world heavyweight champion. still the youngest man to win the world heavyweight crown, the one-time king of the ring will be at johannesburg's 'palace of dreams' on wednesday night, joined at the dinner by the country's new political heavyweight, anc president jacob zuma.