[28] Dusan Lajovic 6-7,6-1,5-7 John Isner [15] 2019-08-11 23:00
Stadium: Center Court Round: 24 Ground: Hardcourt outdoor
Head to Head
| US Open | 2018/08/31 21:00 | John Isner v Dusan Lajovic | 7-6,6-7,6-3,7-5 |
| Davis Cup | 2018/02/02 17:20 | Dusan Lajovic v John Isner | 4-6,7-6,3-6,6-3,6-7 |
| ATP Shanghai | 2017/10/10 05:00 | Dusan Lajovic v John Isner | 6-4,6-7,6-7 |
| ATP Eastbourne | 2017/06/28 15:40 | Dusan Lajovic v John Isner | 6-3,6-7,6-7 |
Home History
| ATP Montreal | 2019/08/05 18:25 | Nikoloz Basilashvili v Dusan Lajovic | 3-6,6-4,6-4 |
| ATP Kitzbuhel | 2019/07/31 09:00 | Jeremy Chardy v Dusan Lajovic | 3-6,6-4,6-3 |
| ATP Gstaad | 2019/07/26 10:05 | Pablo Andujar v Dusan Lajovic | 7-6,6-4 |
| ATP Gstaad | 2019/07/25 11:05 | Denis Istomin v Dusan Lajovic | 4-6,7-6,6-7 |
| ATP Umag | 2019/07/21 18:00 | Attila Balazs v Dusan Lajovic | 5-7,5-7 |
| ATP Umag | 2019/07/19 18:25 | Aljaz Bedene v Dusan Lajovic | 7-5,3-6,3-6 |
| ATP Umag | 2019/07/18 15:30 | Andrey Rublev v Dusan Lajovic | 4-6,3-6 |
| Wimbledon | 2019/07/01 14:25 | Hubert Hurkacz v Dusan Lajovic | 6-3,4-6,6-4,6-4 |
Away History
| ATP Montreal | 2019/08/07 21:15 | Cristian Garin v John Isner | 6-3,6-4 |
| ATP Montreal | 2019/08/06 16:00 | Jordan Thompson v John Isner | 6-3,3-6,6-7 |
| ATP Washington | 2019/08/02 00:00 | Benoit Paire v John Isner | 7-6,6-3 |
| ATP Washington | 2019/07/31 18:00 | Hubert Hurkacz v John Isner | 4-6,4-6 |
| ATP Atlanta | 2019/07/24 23:00 | John Isner v Reilly Opelka | 6-7,7-6,6-7 |
| ATP Newport | 2019/07/21 18:00 | John Isner v Alexander Bublik | 7-6,6-3 |
| ATP Newport | 2019/07/20 19:25 | John Isner v Ugo Humbert | 6-7,7-6,6-3 |
| ATP Newport | 2019/07/19 18:35 | John Isner v Matthew Ebden | 4-6,6-3,6-4 |