Stadion: Court 4 Round: 26 Ground: Clay
| Challenger - Split - Herrendoppel | 2021/04/17 13:00 | Barrere/Olivetti v Walkow/Zielinski | 2-6,5-7 |
| Challenger - Split - Herrendoppel | 2021/04/16 13:30 | Walkow/Zielinski v Golubev/Nedovyesov | 6-3,7-6 |
| Challenger - Split - Herrendoppel | 2021/04/15 12:35 | Ajdukovic/Nincevic v Walkow/Zielinski | 0-6,4-6 |
| Challenger - Split - Herrendoppel | 2021/04/14 13:00 | Walkow/Zielinski v Raja/Weissborn | 6-3,6-4 |
| Challenger - Split - Herrendoppel | 2021/04/10 14:35 | Golubev/Nedovyesov v Walkow/Zielinski | 7-5,6-7,10-5 |
| Challenger - Split - Herrendoppel | 2021/04/09 13:35 | Walkow/Zielinski v Olivetti/Reid | 6-4,6-4 |
| Challenger - Split - Herrendoppel | 2021/04/08 11:00 | Walkow/Zielinski v Galloway/Lawson | 7-5,7-6 |
| Challenger - Split - Herrendoppel | 2021/04/07 12:40 | Doumbia/Reboul v Walkow/Zielinski | 3-6,2-6 |
| ATP - Belgrad - Herrendoppel | 2021/04/24 13:00 | Behar/Escobar v Sabanov/Sabanov | 3-6,6-7 |
| ATP - Belgrad - Herrendoppel | 2021/04/23 14:15 | Sabanov/Sabanov v Berrettini/Vavassori | 7-6,6-3 |
| ATP - Belgrad - Herrendoppel | 2021/04/21 14:25 | Bedene/Sharan v Sabanov/Sabanov | 1-6,3-6 |
| ATP - Belgrad - Herrendoppel | 2021/04/20 15:25 | Sabanov/Sabanov v Klaasen/Mclachlan | 6-4,6-2 |
| Challenger - Split - Herrendoppel | 2021/04/14 14:40 | Barrere/Olivetti v Sabanov/Sabanov | 4-6,7-5,10-6 |
| Challenger - Split - Herrendoppel | 2021/04/08 12:35 | Sabanov/Sabanov v Olivetti/Reid | 1-6,5-7 |
| Challenger - Split - Herrendoppel | 2021/04/07 15:55 | Petrovic/Safwat v Sabanov/Sabanov | 3-6,5-7 |
| Challenger - Zadar - Herrendoppel | 2021/03/26 15:15 | Sabanov/Sabanov v Kavcic/Rola | 5-7,4-6 |