[83] Song Lam Nghe An U21 4-6,2-6 Ryan Harrison [57] 2018-05-11 08:15
Stadium: Court 4 Round: 24 Ground: Hardcourt outdoor
Head to Head
| Challenger Dallas | 2017/02/01 23:50 | Ryan Harrison v Mackenzie McDonald | 6-2,7-6 |
Home History
| Challenger Gimcheon | 2018/05/11 05:00 | Mackenzie McDonald v Soonwoo Kwon | 5-7,5-7 |
| Challenger Gimcheon | 2018/05/09 02:00 | Mackenzie McDonald v Filip Peliwo | 4-6,6-3,6-1 |
| Challenger Gimcheon | 2018/05/08 02:00 | Mackenzie McDonald v Ze Zhang | 7-6,7-6 |
| Challenger Seoul | 2018/05/06 07:00 | Jordan Thompson v Mackenzie McDonald | 6-1,4-6,1-6 |
| Challenger Seoul | 2018/05/05 07:15 | Mackenzie McDonald v Tatsuma Ito | 6-4,7-6 |
| Challenger Seoul | 2018/05/04 04:40 | Mackenzie McDonald v Lloyd Harris | 6-7,7-6,6-3 |
| Challenger Seoul | 2018/05/02 06:00 | Mackenzie McDonald v Kamil Majchrzak | 6-3,6-4 |
| Challenger Seoul | 2018/04/30 04:45 | Mackenzie McDonald v Uisung Park | 7-5,6-2 |
Away History
| ATP Madrid | 2018/05/09 14:25 | John Isner v Ryan Harrison | 7-6,7-6 |
| ATP Madrid | 2018/05/08 16:15 | Guillermo Garcia-Lopez v Ryan Harrison | 4-6,6-7 |
| ATP Houston | 2018/04/12 18:35 | Taylor Fritz v Ryan Harrison | 3-6,6-0,6-3 |
| ATP Houston | 2018/04/10 20:35 | Miomir Kecmanovic v Ryan Harrison | 4-6,3-6 |
| Davis Cup | 2018/04/08 19:00 | Ryan Harrison v Ruben Bemelmans | 6-3,6-4 |
| ATP Miami | 2018/03/21 15:00 | Ryan Harrison v Joao Sousa | 6-7,6-7 |
| ATP Indian Wells | 2018/03/09 01:05 | Ryan Harrison v Federico Delbonis | 2-6,6-4,5-7 |
| ATP Acapulco | 2018/03/01 23:30 | Ryan Harrison v Alexander Zverev | 4-6,1-6 |