| ATP Atlanta | 07/26 22:40 | 26 | [68] Vasek Pospisil v John Isner [20] | 3-6,4-6 | |
| ATP Newport | 07/23 19:00 | 29 | [21] John Isner v Matthew Ebden [249] | 6-3,7-6 | |
| ATP Newport | 07/22 20:10 | 28 | [21] John Isner v Bjorn Fratangelo [142] | 6-2,6-4 | |
| ATP Newport | 07/21 17:00 | 27 | [21] John Isner v Dennis Novikov [203] | 6-4,6-4 | |
| ATP Newport | 07/19 18:35 | 26 | [21] John Isner v Sam Groth [201] | 6-2,6-4 | |
| Wimbledon | 07/06 10:30 | 24 | [90] Dudi Sela v John Isner [21] | 6-7,7-6,5-7,7-6,6-3 | |
| Wimbledon | 07/04 16:35 | 23 |
[128] Taylor Fritz
v
John Isner [21] |
4-6,6-7,3-6 | |
| ATP Eastbourne | 06/29 14:40 | 27 |
[27] Richard Gasquet
v
John Isner [21] |
6-3,6-2 | |
| ATP Eastbourne | 06/28 15:40 | 26 |
[78] Dusan Lajovic
v
John Isner [21] |
6-3,6-7,6-7 | |
| ATP Queens | 06/20 17:15 | 25 |
[7] Marin Cilic
v
John Isner [21] |
7-5,6-3 | |
| French Open | 06/03 14:15 | 25 |
[22] John Isner v
Karen Khachanov
[53] 
|
6-7,3-6,7-6,6-7 | |
| French Open | 06/01 09:00 | 24 | [22] John Isner v Paolo Lorenzi [34] | 6-3,7-6,7-6 | |
| French Open | 05/30 14:50 | 23 |
[22] John Isner v
Jordan Thompson
[92] 
|
6-3,4-6,7-6,6-3 | |
| ATP Geneva | 05/24 11:50 | 26 | [33] Mischa Zverev v John Isner [22] | 6-4,6-7,6-3 | |
| ATP Rome | 05/20 13:00 | 28 |
[17] Alexander Zverev
v
John Isner [24] |
6-4,6-7,6-1 | |
| ATP Rome | 05/19 10:00 | 27 |
[24] John Isner v
Marin Cilic
[8]
|
7-6,2-6,7-6 | |
| ATP Rome | 05/18 13:40 | 26 |
[3] Stan Wawrinka
v
John Isner [24] |
6-7,4-6 | |
| ATP Rome | 05/16 14:40 | 25 | [46] Florian Mayer v John Isner [24] | 6-7,6-7 | |
| ATP Rome | 05/14 13:05 | 24 | [23] John Isner v Albert Ramos-Vinolas [17] | 6-7,7-6,6-1 | |
| ATP Houston | 04/14 17:00 | 27 | [91] Ernesto Escobedo v John Isner [23] | 7-6,6-7,7-6 | |
| ATP Houston | 04/13 17:00 | 26 | [144] Leonardo Mayer v John Isner [23] | 7-6,6-7,3-6 | |
| Davis Cup | 04/09 04:20 | 27 | [198] Sam Groth v John Isner [23] | 6-7,3-6 | |
| Davis Cup | 04/07 05:30 | 27 |
[16] Nick Kyrgios
v
John Isner [23] |
7-5,7-6,7-6 | |
| ATP Miami | 03/27 20:40 | 25 |
[23] John Isner v
Alexander Zverev
[20]
|
7-6,6-7,6-7 | |
| ATP Miami | 03/25 18:40 | 24 | [23] John Isner v Thomaz Bellucci [71] | 7-5,7-6 | |
| ATP Indian Wells | 03/14 03:30 | 25 |
[11] Gael Monfils
v
John Isner [22] |
6-2,6-4 | |
| ATP Indian Wells | 03/11 20:35 | 24 |
[90] Mikhail Kukushkin
v
John Isner [22] |
6-7,6-7 | |
| ATP Acapulco | 02/28 00:00 | 25 | [22] John Isner v Steve Johnson [26] | 4-6,4-6 | |
| ATP Memphis | 02/18 01:30 | 27 | [81] Donald Young v John Isner [23] | 7-6,3-6,7-6 | |
| ATP Memphis | 02/16 01:30 | 26 |
[99] Yoshihito Nishioka
v
John Isner [23] |
6-4,3-6,4-6 |
Wikipedia - John Isner
John Robert Isner (born April 26, 1985) is an American former professional tennis player. He was ranked as high as world No. 8 in singles and No. 14 in doubles by the Association of Tennis Professionals (ATP). Considered one of the best servers ever to play on the ATP Tour, Isner achieved his career-high singles ranking in July 2018 by virtue of his first Masters 1000 crown at the 2018 Miami Open and a semifinal appearance at the 2018 Wimbledon Championships. He also twice reached the quarterfinals at the US Open in 2011 and 2018, the latter of which helped qualify him for an ATP Finals appearance later that year. At the 2010 Wimbledon Championships, he played the longest professional tennis match in history, requiring five sets and 183 games to defeat Nicolas Mahut in a match which lasted 11 hours and 5 minutes, and was played over the course of three days. Isner holds the record for hitting the ATP's fastest official serve ever and third-fastest on record in tennis at 157.2 mph or 253 km/h during his first-round 2016 Davis Cup match. He has the most aces in the history of the ATP Tour, having served 14,470, as of August 31, 2023. Isner retired from professional tennis following the 2023 US Open.