| ITF M25 Monastir | 11/16 10:35 | 26 | [458] Eliakim Coulibaly v Robert Strombachs [342] | 4-6,3-6 | |
| ITF M25 Monastir | 11/15 12:25 | 25 | Nikolay Vylegzhanin v Robert Strombachs | 6-4,3-6,3-6 | |
| ITF M25 Sharm El Sheikh | 11/10 08:00 | 27 | [474] Saba Purtseladze v Robert Strombachs [372] | 6-2,6-3 | |
| ITF M25 Sharm El Sheikh | 11/09 08:00 | 26 | Alec Beckley v Robert Strombachs | 1-6,4-6 | |
| ITF M25 Sharm El Sheikh | 11/08 08:00 | 25 | Petr Bar Biryukov v Robert Strombachs | 4-6,4-6 | |
| ITF M25 Sharm El Sheikh | 11/05 08:00 | 29 | Petr Bar Biryukov v Robert Strombachs | Retired | |
| ITF M25 Sharm El Sheikh | 11/04 08:00 | 28 | [387] Kris Van Wyk v Robert Strombachs [374] | 2-6,0-6 | |
| ITF M25 Sharm El Sheikh | 11/03 08:00 | 27 | Amaury Raynel v Robert Strombachs | 2-6,1-6 | |
| ITF M25 Sharm El Sheikh | 11/02 10:00 | 26 | Cedric Stanke v Robert Strombachs | 2-6,3-6 | |
| ITF M25 Sharm El Sheikh | 11/01 10:15 | 25 | Philip Henning v Robert Strombachs | 6-7,6-3,2-6 | |
| Challenger de Olbia | 10/16 08:00 | 19 | [345] Marius Copil v Robert Strombachs [377] | 6-2,4-6,7-5 | |
| Challenger de Olbia | 10/15 09:10 | 14 | Federico Salomone v Robert Strombachs | 2-6,5-7 | |
| Challenger de Málaga | 10/09 10:40 | 19 | [197] Raul Brancaccio v Robert Strombachs [382] | 6-1,6-3 | |
| Challenger de Málaga | 10/08 13:05 | 14 | [382] Robert Strombachs v Michael Geerts [262] | 6-4,6-7,6-4 | |
| ATP Zhuhai | 09/19 06:00 | 14 | [384] Robert Strombachs v Arthur Weber [312] | 6-4,1-6,6-7 | |
| Copa Davis | 09/17 05:30 | 4 | Coleman Wong v Robert Strombachs | 4-6,6-7 | |
| Copa Davis | 09/16 03:00 | 1 | Hong Kit Wong v Robert Strombachs | 3-6,6-4,3-6 | |
| Challenger de Shanghái | 09/05 05:40 | 25 | [389] Robert Strombachs v Juncheng Shang [178] | 4-6,6-7 | |
| Challenger de Shanghái | 09/04 07:40 | 19 | Robert Strombachs v Alafia Ayeni | 6-4,4-6,6-7 | |
| Challenger de Shanghái | 09/04 03:00 | 14 | [389] Robert Strombachs v Ray Ho [253] | 6-4,7-5 | |
| Challenger de Zhangjiagang | 08/31 02:30 | 26 | [254] Ricardas Berankis v Robert Strombachs [389] | 6-4,6-2 | |
| Challenger de Zhangjiagang | 08/29 06:50 | 25 | Hanyi Liu v Robert Strombachs | 4-6,6-3,3-6 | |
| Challenger de Zhuhai | 08/24 03:00 | 27 | [403] Robert Strombachs v Jason Jung [256] | 4-6,2-6 | |
| Challenger de Zhuhai | 08/23 03:00 | 26 | [313] Dominik Palan v Robert Strombachs [403] | 4-6,7-6,4-6 | |
| Challenger de Zhuhai | 08/21 04:40 | 25 | Robert Strombachs v Tao Mu | 6-4,3-6,6-4 | |
| Challenger de Porto | 08/01 17:30 | 25 | [380] Henrique Rocha v Robert Strombachs [395] | 6-4,4-6,6-4 | |
| Challenger de Porto | 07/31 12:05 | 19 | [395] Robert Strombachs v Duarte Vale [416] | 6-2,7-6 | |
| Challenger de Porto | 07/30 14:00 | 14 | Robert Strombachs v Andrea Guerrieri | 6-3,6-4 | |
| Challenger de Segovia | 07/24 10:50 | 19 | [393] Robert Strombachs v Luca Potenza [462] | 7-6,3-6,6-7 | |
| Challenger de Segovia | 07/23 13:10 | 14 | Robert Strombachs v Maxime Mora | 6-4,6-3 |
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.