[14] John Isner 5-7,6-3,6-7,4-6 Marin Cilic [23] 2019-08-31 18:40
Stadium: Grandstand Round: 25 Ground: Hardcourt outdoor
Head to Head
| ATP World Tour Finals | 2018/11/14 20:00 | Marin Cilic v John Isner | 6-7,6-3,6-4 |
| ATP Miami | 2018/03/27 15:00 | John Isner v Marin Cilic | 7-6,6-3 |
| ATP Queens | 2017/06/20 17:15 | Marin Cilic v John Isner | 7-5,6-3 |
| ATP Rome | 2017/05/19 10:00 | John Isner v Marin Cilic | 7-6,2-6,7-6 |
| ATP Paris | 2016/11/05 13:10 | Marin Cilic v John Isner | 4-6,3-6 |
| Davis Cup | 2016/07/17 19:00 | John Isner v Marin Cilic | 6-7,3-6,4-6 |
| Wimbledon | 2015/07/03 15:55 | Marin Cilic v John Isner | 7-6,6-7,6-4,6-7,12-10 |
| ATP Delray Beach | 2014/02/23 04:25 | Marin Cilic v John Isner | 7-6,6-3 |