Stadium: Central Court Round: 25 Ground: Clay
| Challenger Santiago | 2021/03/15 15:00 | Holger Rune v Sebastian Baez | 2-6,4-6 |
| ATP Santiago | 2021/03/12 16:30 | Federico Delbonis v Holger Rune | 6-3,6-3 |
| ATP Santiago | 2021/03/10 22:30 | Holger Rune v Benoit Paire | 6-2,6-3 |
| ATP Santiago | 2021/03/09 19:30 | Holger Rune v Sebastian Baez | 6-3,6-2 |
| ATP Santiago | 2021/03/08 14:00 | Holger Rune v Renzo Olivo | 4-6,6-3,6-4 |
| ATP Santiago | 2021/03/07 14:00 | Emilio Gomez v Holger Rune | 3-6,6-4,1-6 |
| ATP Santiago | 2021/03/06 14:35 | Holger Rune v Goncalo Oliveira | 7-6,2-6,6-2 |
| ATP Buenos Aires | 2021/03/02 19:30 | Albert Ramos-Vinolas v Holger Rune | 2-6,6-4,6-3 |
| Challenger Lugano | 2021/03/24 11:10 | Tim Van Rijthoven v Dominic Stephan Stricker | 7-5,4-6,6-7 |
| Challenger Lugano | 2021/03/23 11:15 | Peter Gojowczyk v Tim Van Rijthoven | 4-6,6-4,4-6 |
| Challenger Lugano | 2021/03/22 12:00 | Tim Van Rijthoven v Sandro Ehrat | 7-6,6-4 |
| Challenger Lugano | 2021/03/21 11:50 | Tim Van Rijthoven v Alexander Erler | 7-6,6-0 |
| Challenger St. Petersburg | 2021/03/09 11:00 | Pavel Kotov v Tim Van Rijthoven | 6-2,6-4 |
| Challenger St. Petersburg | 2021/03/08 07:00 | Khumoyun Sultanov v Tim Van Rijthoven | 2-6,1-6 |
| Challenger St. Petersburg Qual | 2021/03/07 08:15 | Konstantin Kravchuk v Tim Van Rijthoven | 4-6,4-6 |
| ATP Rotterdam | 2021/02/27 10:00 | Marcos Giron v Tim Van Rijthoven | 6-2,5-7,6-4 |