Date: 11th February 1989
Venue: Provincial Stadium, Nakhon Ratchasima, ThailandTitle: WBC World Minimum Title
Promoter: BBTV Channel 7
Napa Kiatwanchai
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8
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0
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1
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Weight: 103 1/2 lbs
John Arief
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6
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2
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2
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Weight: 103 lbs
Having won the WBC World Minimum Title at the second attempt against Japan's Hiroki Ioka in Japan (The first fight scored a split decision draw), Kiatwanchai made the first defence of the title at home in Thailand against Indonesia's John Arief.
The champion pleased his fans with a wide unanimous decision win.
Scores: Dae-Eun Chung 119-106 | Kodai Kumasaki 120-108 | Salvador Placencia 120-107.
After his next defence, his trilogy match against Ioki (W Tko 11), Kiatwanchai would lose the title in Seoul, South Korea to Jum Hwan Choi.