Naoya Inoue returned to Japanese soil on 14 December 2021 with the same authority that has defined his rise, stopping Thailand’s Aran Dipaen in the eighth round at the Ryōgoku Kokugikan in Tokyo. The victory extended Inoue’s unbeaten record to 22 straight wins and saw him successfully defend the WBA (Super), IBF and The Ring bantamweight titles in emphatic fashion.

The bout had been confirmed in late October as a voluntary defence, with Dipaen entering as the IBF’s sixth-ranked challenger. While the challenger arrived with a reputation for toughness and a high knockout ratio, the contest followed a familiar pattern once the opening bell sounded. Inoue began with patience, measuring distance and rhythm rather than forcing an early conclusion. The opening rounds were notable for the champion’s economy of movement, subtle footwork and probing jab, which gradually set the tone.

Dipaen showed commendable resolve. He stayed compact behind a high guard and attempted to counter whenever openings appeared. For several rounds he remained upright despite absorbing sustained pressure, a testament to his conditioning and durability. However, as the fight progressed, the gap in class became increasingly clear. Inoue varied his attacks, mixing sharp punches upstairs with heavy work to the body that began to sap the challenger’s resistance.

By the middle rounds, the Tokyo crowd could sense the momentum shifting decisively. Inoue’s timing sharpened, his combinations became more fluid, and Dipaen was repeatedly driven back towards the ropes. Although the Thai contender continued to answer the count and fire back when possible, his defensive shell was steadily being dismantled by the champion’s accuracy and balance.

The finish came in the eighth round. A clean left hook dropped Dipaen to the canvas, the first knockdown of the contest. He rose, but only briefly. As the action resumed, another left hand caught him flush, leaving the referee with little option but to intervene. The stoppage was called at 2:34 of the round, bringing a decisive end to a fight that had showcased both Inoue’s patience and his ruthless ability to close the show once the opportunity presented itself.

This win followed Inoue’s previous outing in June 2021, when he overwhelmed Michael Dasmariñas with a third-round knockout in Las Vegas. That performance had already underlined his status as one of boxing’s most complete champions, and the Dipaen defence reinforced that standing on home ground. It was no surprise that, later in the year, Inoue was recognised as Fighter of the Year by the Japanese Boxing Commission.

In front of a passionate Tokyo audience, Naoya Inoue once again demonstrated why he sits at the pinnacle of the bantamweight division, while Aran Dipaen earned respect for his resilience in defeat, as the contest concluded with both fighters having left a clear imprint on the Ryōgoku Kokugikan ring.