QUEENSLANDER Jeff Horn took up boxing when he was 18.
Six years later, the light welterweight now finds himself as Australia's only hope of winning a medal in the men's competition in London.
Horn is Australia's lone quarter-finalist after a second round 17-11 win over Tunisian Abderrazk Houya.
He will face second-seeded Ukrainian and 2011 world champion Denys Berinchyk at 7.15am (AEST) on Thursday.
Berinchyk was pushed all the way by Sweden's Anthony Yigit in his bout, scraping through with a 24-23 win.
Australia has not won an Olympic boxing medal since Grahame Cheney, also a light welterweight, won silver in Seoul in 1988
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