The Singapore-based promotion announced the matchup on Monday. One “Enter the Dragon” takes place at Singapore Indoor Stadium and is headlined by a lightweight title bout pitting Shinya Aoki against Christian Lee. The card will also feature the One debut of Sage Northcutt, who faces Cosmo Alexandre at welterweight.
Tonon, a Brazilian jiu-jitsu black belt, began his MMA career at welterweight before dropping to lightweight for his last two bouts. In One, lightweights compete at 170 pounds, while featherweights fight at 155 pounds. Tonon is 4-0 thus far under the One banner and is coming off a first-round technical knockout of Anthony Engelen on March 31.
Nakahara owns a 12-4 career mark that includes a nine-bout stint in Pancrase. He made his first promotional foray at One “Clash of Legends,” where he stopped Emilio Urrutia in the third round on Feb. 16.