TOKYO, JAPAN - OCTOBER 01: Rafael Jodar of Spain serves against Adolfo Daniel Vallejo of Paraguay during their singles match on day two of Kinoshita Group Japan Open at Ariake Tennis Park on October 01, 2026 in Tokyo, Japan. (Photo by Kenta Harada/Getty Images)

TOKYO, JAPAN - OCTOBER 01: Carlos Alcaraz of Spain reacts against Alex Michelsen of United States during their Men's singles match on day two of Kinoshita Group Japan Open at Ariake Tennis Park on October 01, 2026 in Tokyo, Japan. (Photo by Kenta Harada/Getty Images)

TOKYO, JAPAN - OCTOBER 01: Kei Nishikori of Japan leaves the court after a ceremony for his retirement on day two of Kinoshita Group Japan Open at Ariake Tennis Park on October 01, 2026 in Tokyo, Japan. (Photo by Kenta Harada/Getty Images)

TOKYO, JAPAN - OCTOBER 01: Taylor Fritz of United States celebrates a point against Jaume Munar of Spain during their Men's singles match day one on day two of Kinoshita Group Japan Open at Ariake Tennis Park on October 01, 2026 in Tokyo, Japan. (Photo by Kenta Harada/Getty Images)

TOKYO, JAPAN - OCTOBER 01: Kei Nishikori of Japan plays a forehand against Frances Tiafoe of United States during their singles match on day two of Kinoshita Group Japan Open at Ariake Tennis Park on October 01, 2026 in Tokyo, Japan. (Photo by Kenta Harada/Getty Images)

TOKYO, JAPAN - OCTOBER 01: Alex Michelsen of United States serves against Carlos Alcaraz of Spain during their singles match on day two of Kinoshita Group Japan Open at Ariake Tennis Park on October 01, 2026 in Tokyo, Japan. (Photo by Kenta Harada/Getty Images)

TOKYO, JAPAN - OCTOBER 01: Adolfo Daniel Vallejo of Paraguay celebrates a victory against Rafael Jodar of Spain during their Men's singles match on day two of Kinoshita Group Japan Open at Ariake Tennis Park on October 01, 2026 in Tokyo, Japan. (Photo by Kenta Harada/Getty Images)

TOKYO, JAPAN - OCTOBER 01: Kei Nishikori of Japan reacts against Frances Tiafoe of United States during their singles match on day two of Kinoshita Group Japan Open at Ariake Tennis Park on October 01, 2026 in Tokyo, Japan. (Photo by Kenta Harada/Getty Images)