Naoya Inoue outshines Junto Nakatani in Tokyo showdown to keep super-bantamweight title

• Champion nicknamed the Monster holds off late surge

• Both boxers had unbeaten records entering Saturday

• Battle billed as biggest fight in Japanese boxing history

Naoya Inoue successfully defended his undisputed super-bantamweight championship with a close but uncontroversial 12-round unanimous decision over Junto Nakatani in their eagerly anticipated showdown at the Tokyo Dome on Saturday night.

Before a sellout crowd of about 55,000 spectators during Japan’s Golden Week holiday, Inoue held off a fierce late surge from his unbeaten rival to win by scores of 116-112, 116-112 and 115-113 and retain the WBA, WBC, IBF and WBO belts at 122lb, extending his perfect record in what had been billed as the biggest fight in Japanese boxing history. (The Guardian had it 115-113 for Inoue.)