TOKYO, JAPAN - OCTOBER 01: Adolfo Daniel Vallejo of Paraguay plays a forehand 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: Rafael Jodar of Spain walk into the court against Adolfo Daniel Vallejo of Paraguay their Men's singles match prior to the 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: Frances Tiafoe of United States (L) and Kei Nishikori of Japan embrace at the net after the 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: A general view of the centre court during the Men's Singles match between Carlos Alcaraz of Spain and Alex Michelsen of United States 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 plays a forehand 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: Kei Nishikori of Japan celebrates a point 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: 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: (L-R) Ai Sugiyama , Shingo Kunieda , Kei Nishikori , Go Soeda of Japan National team manager and Kimiko Date pose for photographs at a retirement ceremony for Kei Nishikori 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)