ONE Championship will crown its first strawweight champion in May.
The promotion announced that Roy Doliguez and Dejdamrong Sor Amnuaysirichoke will meet for the inaugural 115-pound belt in the co-main event of ONE Championship 27 in Kallang, Singapore, on May 22.
Doliguez (6-1), who fought from 105 to 135 pounds throughout his career, makes his promotional debut after winning four in a row. Doliguez most recently defeated Dennis Salazar, avenging the only loss of his MMA career.
Sor Amnuaysirichoke (4-0) will cut down to 115 pounds after building a perfect record as a flyweight.