[9] John Isner 6-7,6-4,6-7 Steve Johnson [51] 2018-04-14 00:10
Stadion: Stadium Court Round: 27 Ground: Clay
Head to Head
| ATP - Acapulco | 2017/02/28 00:00 | John Isner v Steve Johnson | 4-6,4-6 |
| ATP - Auckland | 2017/01/12 00:50 | Steve Johnson v John Isner | 6-3,5-7,7-6 |
| ATP - Washington | 2016/07/22 19:00 | John Isner v Steve Johnson | 6-7,6-7 |
| ATP - Washington | 2015/08/08 23:00 | John Isner v Steve Johnson | 6-3,3-6,7-6 |
| Challenger - Shanghai | 2014/10/08 10:30 | John Isner v Steve Johnson | 7-6,7-6 |
| ATP - Washington | 2014/07/30 22:00 | John Isner v Steve Johnson | 7-6,3-6,6-7 |
Home History
| ATP - Houston | 2018/04/12 23:00 | John Isner v Henri Laaksonen | 6-4,6-2 |
| Davis Cup | 2018/04/06 21:00 | John Isner v Joris De Loore | 6-3,6-7,7-6,6-4 |
| ATP - Miami | 2018/04/01 17:00 | Alexander Zverev v John Isner | 7-6,4-6,4-6 |
| ATP - Miami | 2018/03/30 17:00 | Juan Martin Del Potro v John Isner | 1-6,6-7 |
| ATP - Miami | 2018/03/28 19:00 | Hyeon Chung v John Isner | 1-6,4-6 |
| ATP - Miami | 2018/03/27 15:00 | John Isner v Marin Cilic | 7-6,6-3 |
| ATP - Miami | 2018/03/25 21:25 | John Isner v Mikhail Youzhny | 6-4,6-3 |
| ATP - Miami | 2018/03/23 21:50 | John Isner v Jiri Vesely | 7-6,1-6,6-3 |
Away History
| ATP - Houston | 2018/04/12 17:00 | Frances Tiafoe v Steve Johnson | 3-6,4-6 |
| ATP - Houston | 2018/04/10 23:00 | Ernesto Escobedo v Steve Johnson | 6-3,6-7,2-6 |
| ATP - Miami | 2018/03/26 15:00 | Steve Johnson v Pablo Carreno Busta | 4-6,4-6 |
| ATP - Miami | 2018/03/24 22:20 | Adrian Mannarino v Steve Johnson | 3-6,3-6 |
| ATP - Miami | 2018/03/22 20:00 | Steve Johnson v Victor Estrella Burgos | 6-3,6-3 |
| Challenger - Irving | 2018/03/17 20:05 | Steve Johnson v Mikhail Kukushkin | 4-6,6-7 |
| Challenger - Irving | 2018/03/16 22:00 | Alex De Minaur v Steve Johnson | 2-6,2-6 |
| Challenger - Irving | 2018/03/15 18:00 | Lukas Lacko v Steve Johnson | 0-6,2-6 |