Kei Nishikori retires after Japan Open defeat by Frances Tiafoe

Kei Nishikori has ended his professional tennis career at the Japan Open, losing 6-4, 6-4 to Frances Tiafoe in Tokyo. BBC Sport reported that the 36-year-old former world number four made an emotional farewell to his home crowd after the defeat by the eighth-ranked American, bringing his 19-year career to a close.

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Nishikori told spectators that competing in Japan held particular meaning for him. Although he had hoped to deliver a stronger performance in his final appearance, he said he was pleased to have continued competing until the match was over. His farewell included a lap around Tokyo's main showcourt, where he had previously celebrated Japan Open titles in 2012 and 2014.

The ceremony also featured recorded tributes from Novak Djokovic, Andy Murray and Michael Chang. According to the BBC's account, Djokovic praised Nishikori's determination through repeated setbacks and reflected on their meetings around the world. He also welcomed the opportunity for Nishikori to finish his playing career in his own country, with Japanese supporters present for the occasion.

Nishikori's most significant Grand Slam run came at the 2014 US Open. He defeated Stan Wawrinka and Djokovic, who was then world number one, before facing Marin Cilic in the final. That appearance made him the first Japanese man to contest a major singles final. Two years later, he added an Olympic bronze medal in Rio, beating Rafael Nadal to secure a place on the podium.

His achievements extended beyond those two tournaments. Nishikori collected 12 ATP Tour singles titles and recorded 40 wins against opponents ranked in the top 10. He also became the first Japanese man to enter the world's top 10 himself. BBC Sport identified four-time major champion Naomi Osaka among the players he inspired, alongside the ranking and tournament milestones he established during his career.

Nishikori began playing tennis at five and moved to Florida at 14 to pursue his training. Injuries repeatedly interrupted his years on tour, but he finished with a notably strong record when matches went to a deciding set. The BBC reported a 72.5% winning rate in those situations, placing him third in ATP Tour history behind Bjorn Borg and John McEnroe.