[35] Nick Kyrgios 7-6,5-7,7-6 Ryan Harrison [62] 2019-01-01 05:00
Stadium: Pat Rafter Arena Round: 25 Ground: Hardcourt outdoor
Head to Head
| ATP Brisbane | 2018/01/07 09:00 | Nick Kyrgios v Ryan Harrison | 6-4,6-2 |
| ATP Madrid | 2017/05/10 10:00 | Nick Kyrgios v Ryan Harrison | 6-3,6-3 |
| ATP Tokyo | 2016/10/04 04:00 | Nick Kyrgios v Ryan Harrison | 7-5,6-2 |
Home History
| ATP Moscow | 2018/10/16 16:45 | Nick Kyrgios v Andrey Rublev | 6-3,4-6,6-4 |
| ATP Shanghai | 2018/10/08 10:35 | Bradley Klahn v Nick Kyrgios | 4-6,6-4,6-3 |
| ATP Tokyo | 2018/10/04 10:45 | Richard Gasquet v Nick Kyrgios | 7-6,7-6 |
| ATP Tokyo | 2018/10/03 03:00 | Nick Kyrgios v Yoshihito Nishioka | 7-5,7-6 |
| Laver Cup | 2018/09/22 20:05 | Roger Federer v Nick Kyrgios | 6-3,6-2 |
| US Open | 2018/09/01 18:05 | Nick Kyrgios v Roger Federer | 4-6,1-6,5-7 |
| US Open | 2018/08/30 16:10 | Nick Kyrgios v Pierre-Hugues Herbert | 4-6,7-6,6-3,6-0 |
| US Open | 2018/08/28 23:00 | Nick Kyrgios v Radu Albot | 7-5,2-6,6-4,6-2 |
Away History
| ATP Basel | 2018/10/22 18:40 | Marius Copil v Ryan Harrison | 6-2,7-6 |
| US Open | 2018/08/27 21:15 | Ryan Harrison v Kevin Anderson | 6-7,7-5,6-4,3-6,4-6 |
| ATP Winston-Salem | 2018/08/23 23:00 | Daniil Medvedev v Ryan Harrison | 7-6,6-4 |
| ATP Winston-Salem | 2018/08/23 01:10 | Ryan Harrison v Filip Krajinovic | 6-3,7-6 |
| ATP Winston-Salem | 2018/08/20 23:00 | Ryan Harrison v Borna Gojo | 6-2,6-4 |
| ATP Cincinnati Qual | 2018/08/12 00:30 | Ryan Harrison v Hubert Hurkacz | 3-6,3-6 |
| ATP Toronto | 2018/08/08 16:00 | Ryan Harrison v Ilya Ivashka | 6-7,4-6 |
| ATP Toronto | 2018/08/07 16:15 | Mackenzie McDonald v Ryan Harrison | 4-6,2-6 |