[43] Kei Nishikori 3-6,2-6 Alexander Zverev [6] 2021-05-05 11:05
Stadium: Arantxa Sanchez Stadium Round: 25 Ground: Clay
Head to Head
| ATP Washington | 2018/08/03 20:00 | Alexander Zverev v Kei Nishikori | 3-6,6-1,6-4 |
| ATP Monte Carlo | 2018/04/21 13:30 | Alexander Zverev v Kei Nishikori | 6-3,3-6,4-6 |
| ATP Washington | 2017/08/05 23:00 | Alexander Zverev v Kei Nishikori | 6-3,6-4 |
Home History
| ATP Madrid | 2021/05/04 09:00 | Karen Khachanov v Kei Nishikori | 7-6,2-6,2-6 |
| ATP Barcelona | 2021/04/22 14:00 | Rafael Nadal v Kei Nishikori | 6-0,2-6,6-2 |
| ATP Barcelona | 2021/04/21 15:00 | Kei Nishikori v Cristian Garin | 7-6,4-6,6-1 |
| ATP Barcelona | 2021/04/19 13:10 | Kei Nishikori v Guido Pella | 4-6,7-6,6-2 |
| ATP Miami | 2021/03/29 23:00 | Kei Nishikori v Stefanos Tsitsipas | 3-6,6-3,1-6 |
| ATP Miami | 2021/03/27 15:00 | Kei Nishikori v Aljaz Bedene | 7-6,5-7,6-4 |
| ATP Dubai | 2021/03/18 15:35 | Lloyd Harris v Kei Nishikori | 6-1,3-6,6-3 |
| ATP Dubai | 2021/03/17 15:00 | Aljaz Bedene v Kei Nishikori | 4-6,4-6 |
Away History
| ATP Munich | 2021/04/30 12:15 | Alexander Zverev v Ilya Ivashka | 7-6,5-7,3-6 |
| ATP Munich | 2021/04/28 12:15 | Alexander Zverev v Ricardas Berankis | 6-2,6-4 |
| ATP Monte Carlo | 2021/04/15 11:00 | David Goffin v Alexander Zverev | 6-4,7-6 |
| ATP Monte Carlo | 2021/04/14 14:05 | Lorenzo Sonego v Alexander Zverev | 3-6,3-6 |
| ATP Miami | 2021/03/26 20:30 | Alexander Zverev v Emil Ruusuvuori | 6-1,3-6,1-6 |
| ATP Acapulco | 2021/03/21 03:00 | Stefanos Tsitsipas v Alexander Zverev | 4-6,6-7 |
| ATP Acapulco | 2021/03/20 02:00 | Dominik Koepfer v Alexander Zverev | 4-6,6-7 |
| ATP Acapulco | 2021/03/18 01:55 | Laslo Djere v Alexander Zverev | 4-6,3-6 |