| Challenger Kachreti | 05/22 06:00 | 26 | [245] Philip Sekulic v Robert Strombachs [405] | 7-6,7-6 | |
| Challenger Kachreti | 05/21 08:45 | 25 | Robert Strombachs v Alafia Ayeni | 6-4,2-6,7-5 | |
| ITF - Kachreti M25 | 05/15 09:30 | 25 | [413] Robert Strombachs v Ulises Blanch [489] | 4-6,6-4,6-7 | |
| Challenger Praga | 05/06 10:00 | 19 | [290] Clement Chidekh v Robert Strombachs [413] | 0-6,6-0,6-1 | |
| Challenger Praga | 05/05 14:05 | 14 | Filip Hanzelin v Robert Strombachs | 4-6,3-6 | |
| ITF - Nottingham M25 | 05/03 08:55 | 27 | [388] Robert Strombachs v Charles Broom [339] | 4-6,4-6 | |
| ITF - Nottingham M25 | 05/02 12:40 | 26 | Robert Strombachs v Alexandre Reco | 6-2,7-6 | |
| ITF - Nottingham M25 | 04/30 10:55 | 25 | Robert Strombachs v Benjamin Gusic Wan | 6-4,6-2 | |
| Challenger Ostrava | 04/22 09:10 | 19 | [351] Jakub Nicod v Robert Strombachs [388] | 6-2,6-3 | |
| Challenger Ostrava | 04/21 09:40 | 14 | [321] David Poljak v Robert Strombachs [389] | 6-7,6-1,3-6 | |
| Challenger Split | 04/08 08:00 | 19 | [326] Felix Gill v Robert Strombachs [386] | 6-1,4-6,6-3 | |
| Challenger Split | 04/07 12:00 | 14 | Duje Markovina v Robert Strombachs | 2-6,2-6 |
Robert Strombachs (Latvian: Roberts Štrombahs; born 15 September 1999) is a Latvian-German tennis player.
Strombachs has a career high ATP singles ranking of world No. 338, achieved on 27 November 2023. He also has a career high ATP doubles ranking of No. 383, achieved on 19 August 2019.
Strombachs represents Latvia at the Davis Cup, where he has a W/L record of 7–6.