John Isner

John Isner (born 26 April 1985) is a retired tennis player from the United States. Isner has a career-high singles ranking of No. 8, and a career-high doubles ranking of No. 14.

Playing for the United States Davis Cup team, Isner has a win–loss record of 17–13.

Singles

 * 🇺🇸 Dallas (6 Feb 2023) – 🇨🇳 Wu Yibing def. 🇺🇸 John Isner, 6–7(4–7), 7–6(7–3), 7–6(14–12).

Grand Slam

 * Singles
 * Doubles