[105] Mikhail Kukushkin 6-7,6-7 Thiago Monteiro [78] 2021-05-08 08:00
Stadium: Court 4 Round: 14 Ground: Clay
Home History
| ATP Madrid | 2021/05/01 16:00 | Mikhail Kukushkin v Pablo Andujar | 3-6,4-6 |
| ATP Barcelona | 2021/04/17 11:40 | Mikhail Kukushkin v Carlos Gimeno Valero | 1-6,2-6 |
| ATP Marbella | 2021/04/06 13:50 | Mikhail Kukushkin v Gianluca Mager | 5-7,3-6 |
| ATP Miami | 2021/03/27 18:20 | Aslan Karatsev v Mikhail Kukushkin | 6-4,6-3 |
| ATP Dubai | 2021/03/15 09:00 | Jan-Lennard Struff v Mikhail Kukushkin | 6-3,6-2 |
| ATP Dubai | 2021/03/14 07:00 | Mikhail Kukushkin v Lorenzo Giustino | 6-2,6-2 |
| ATP Dubai | 2021/03/13 08:45 | Mikhail Kukushkin v Maxime Janvier | 7-5,3-6,6-1 |
| ATP Marseille | 2021/03/09 14:55 | Mikhail Kukushkin v Arthur Rinderknech | 6-1,3-6,2-6 |
Away History
| ATP Madrid | 2021/05/01 09:00 | Marcos Giron v Thiago Monteiro | 6-4,6-7,7-6 |
| ATP Munich | 2021/04/27 11:05 | Nikoloz Basilashvili v Thiago Monteiro | 6-2,6-3 |
| ATP Barcelona | 2021/04/19 16:05 | Thiago Monteiro v Jaume Munar | 3-6,5-7 |
| ATP Monte Carlo | 2021/04/10 09:30 | Thiago Monteiro v Joao Sousa | 5-7,2-6 |
| ATP Buenos Aires | 2021/03/03 16:00 | Miomir Kecmanovic v Thiago Monteiro | 5-7,6-3,6-4 |
| ATP Buenos Aires | 2021/03/01 23:00 | Roberto Carballes Baena v Thiago Monteiro | 2-6,3-6 |
| ATP Cordoba | 2021/02/26 17:30 | Thiago Monteiro v Juan Manuel Cerundolo | 2-6,6-2,3-6 |
| ATP Cordoba | 2021/02/25 17:30 | Thiago Monteiro v Roberto Carballes Baena | 6-3,6-4 |