Sasha Moisa made his Lethwei debut on February 22, 2019 at WLC 7: Mighty Warriors, where he knocked out Myanmar’s Shwe Yar Mann in the third round.

In 2019, he challenged Artur Saladiak for the World Lethwei Light Middleweight World Championship. On August 2, 2019, at WLC 9: King of Nine Limbs, Moisa emerged victorious by unanimous decision and was crowned World Lethwei Light Middleweight World Champion