Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister. Tadashi Yanai, the founder and president of Fast Retailing, the parent company of Uniqlo ("unique clothing"), gives a bunch of flowers Kunieda to celebrate his great career.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister. Tadashi Yanai, the founder and president of Fast Retailing, the parent company of Uniqlo ("unique clothing"), gives a bunch of flowers Kunieda to celebrate his great career.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister. Tadashi Yanai, the founder and president of Fast Retailing, the parent company of Uniqlo ("unique clothing"), gives a bunch of flowers Kunieda to celebrate his great career.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister. Tadashi Yanai, the founder and president of Fast Retailing, the parent company of Uniqlo ("unique clothing"), gives a bunch of flowers Kunieda to celebrate his great career.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister. Tadashi Yanai, the founder and president of Fast Retailing, the parent company of Uniqlo ("unique clothing"), gives a bunch of flowers Kunieda to celebrate his great career.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister. Tadashi Yanai, the founder and president of Fast Retailing, the parent company of Uniqlo ("unique clothing"), gives a bunch of flowers Kunieda to celebrate his great career.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )

Japanese wheelchair tennis player Shingo Kunieda attends a press conference to announce his retirement at UNIQLO CITY TOKYO in Koto Ward, Tokyo on February 7, 2023. 38-year-old legendary wheelchair tennis player Kunieda has completed the Golden Slam including 50 grand slam titles and 3 Paralympic gold medals. Kunieda will be bestowed with the People's Honor Award by Japan's Prime Minister.( The Yomiuri Shimbun via AP Images )