He was regarded as the undisputed champion until his loss to Gilberto Roman .
Watanabe had his WBA title stripped for unifying the Super Flyweight championship with the WBC champion Payao Poontarat .
Watanabe was regarded as the undisputed champion until Watanabe 's loss to Gilberto Roman .
Watanabe had his WBA title stripped for unifying the Super Flyweight championship with the WBC champion Payao Poontarat .