[129] Christopher O'Connell 6-3,6-7,5-7 Andrej Martin [119] 2021-05-24 15:50
Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
Head to Head
| Challenger Como | 2019/08/29 12:15 | Christopher O'Connell v Andrej Martin | 2-6,2-6 |
Home History
| ATP Belgrade | 2021/05/23 10:25 | Christopher O'Connell v Lukas Klein | 7-6,7-5 |
| ATP Belgrade | 2021/05/22 14:25 | Christopher O'Connell v Darian King | 6-1,6-3 |
| ATP Miami | 2021/03/25 23:30 | Christopher O'Connell v Joao Sousa | 6-7,7-6,5-7 |
| ATP Dubai | 2021/03/15 10:35 | Christopher O'Connell v Lloyd Harris | 7-6,4-6,1-6 |
| ATP Dubai | 2021/03/14 07:00 | Christopher O'Connell v Thomas Fabbiano | 6-2,6-4 |
| ATP Dubai | 2021/03/13 07:00 | Christopher O'Connell v Cem Ilkel | 6-3,6-4 |
| ATP Doha | 2021/03/09 11:30 | Christopher O'Connell v Vasek Pospisil | 3-6,4-6 |
| ATP Doha | 2021/03/07 12:30 | Christopher O'Connell v Thomas Fabbiano | 6-3,7-6 |
Away History
| ATP Belgrade | 2021/05/23 09:00 | Andrej Martin v Mats Moraing | 6-1,6-3 |
| ATP Belgrade | 2021/05/22 13:00 | Andrej Martin v Akira Santillan | 6-3,6-3 |
| Challenger Zagreb | 2021/05/12 11:15 | Tomas Barrios Vera v Andrej Martin | 2-6,6-3,6-2 |
| Challenger Prague | 2021/05/05 09:00 | Michael Vrbensky v Andrej Martin | 6-4,1-6,6-4 |
| Challenger Prague | 2021/05/04 09:55 | Andrew Paulson v Andrej Martin | 3-6,3-6 |
| ATP Munich | 2021/04/27 10:40 | Andrej Martin v Jan-Lennard Struff | 4-6,3-6 |
| ATP Munich | 2021/04/25 09:00 | Andrej Martin v Mackenzie McDonald | 3-6,2-6 |
| ATP Munich | 2021/04/24 09:00 | Andrej Martin v Jurij Rodionov | 6-1,6-1 |