BOXER Johan Linde will be fighting the tears, but pulling no punches, when he steps into the ring to make his Olympic debut tomorrow morning.
The South Australian super-heavyweight is in mourning after his trainer and mentor Colin Betty died last week.
Linde, who had been under Betty's guidance since 1999, will take on China's Zhilei Zhang in his first bout of the Games at 8am AEST.
He's vowed to win and dedicate it to Betty.
Linde, who works in the revenue section at the Treasury and Finance Department in Adelaide, won't be the only Aussie making his debut.
Jai Opetaia, who only turned 17 last month, will take to the ring for his heavyweight bout against Teymur Mammadov of Azerbaijan.
Opetaia, who has already sparred with Danny Green and Anthony Mundine, earned the right to become Australia's youngest ever Olympic boxer after winning the 2012 Australian under 91kg heavyweight title in Hobart and the 2012 Oceania Heavyweight title in Canberra at the age of 16.
Meanwhile, bantamweight Ibrahim Balla will have his second fight of the Games against Bulgarian Detelin Dalakliev.
Before last night's bouts, Damien Hooper became the third Aussie to reach the round of 16 after beating American Marcus Browne 13-11.
Only three Aussies reached the same stage in Beijing four years ago.
Jackson Woods reached the end of the road in the flyweight division, after losing 14-12 against Algerian Samir Brahimi.
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