All of ONE Championship's double world champions so far

#4. Aung La N Sang - The first ONE middleweight and light heavyweight world champion

Aung La N Sang started his rise in ONE Championship with four straight victories in the circle.

In 2017, he bravely stepped in on short notice for a world title clash against ONE middleweight world champion Vitaly Bigdash. He pushed the hulking Russian to five rounds but could not claim the world title.

The pair met for a rematch five months later, with Aung La getting the opportunity to fully prepare for their bout. It paid off in a big way as he claimed his first world title in front of his home fans in Myanmar.

In 2018, ‘The Burmese Python’ took on Alexandre Machado for the vacant ONE light heavyweight world championship. Myanmar’s hero needed only 56 seconds to stop Machado in their matchup and claim his second world title.

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#3. Stamp Fairtex - ONE’s first two-sport world champion

Stamp Fairtex introduced herself on the global stage of ONE Championship in a big way. The Thai superstar faced ONE atomweight kickboxing world champion Kai Ting Chuang in her debut match in October 2018.

Stamp outclassed her opponent through five rounds to earn a unanimous decision victory and claim her first world title.

It was only the beginning of her rise though. She was tasked to face promotional newcomer Janet Todd four months later for the inaugural ONE atomweight Muay Thai world title. Stamp showed why she is one of the best Muay Thai fighters around with a dominant performance to win via unanimous decision.

By claiming the Muay Thai crown, Stamp made history by becoming the first two-sport world champion in the promotion. She later turned her focus on climbing the MMA ranks and even won the ONE Women’s Atomweight World Grand Prix Championship.

After winning the prestigious tournament, Stamp expressed her desire to claim gold in a third sport, a goal that she continues to pursue today.