| Open de Suisse - Doubles Femmes - Qualif. | 2018/12/13 09:00 | Krzysztof Jakowczuk v Tetreault, Maxime | W | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/11/27 01:00 | Krzysztof Jakowczuk v Chang, En Chia | L | 0-2 |
| Giraldilla Int. XD | 2018/09/21 09:55 | Lu, C. H. v Krzysztof Jakowczuk | L | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/03/15 14:00 | Krzysztof Jakowczuk v Mohd Ibrahim, Muhammad Lukman | L | 0-2 |
| Giraldilla Int. XD | 2018/02/15 08:00 | Krzysztof Jakowczuk v Jan Louda | L | 0-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2017/12/05 09:30 | Krzysztof Jakowczuk v Dolan, Jonathan | L | 1-2 |
| Giraldilla Int. XD | 2017/03/23 08:31 | Krzysztof Jakowczuk v Jardim, Hugo | W | 2-0 |
| Giraldilla Int. XD | 2017/03/09 17:03 | Koenig, Joel v Krzysztof Jakowczuk | W | 0-2 |
| US Open 2019, MS, Qualification | 2019/07/09 22:40 | Sun, F. v Karan Rajan Rajarajan | L | 2-0 |
| US Open 2019, MS, Qualification | 2019/07/09 19:10 | Brito Gonzalez, Cesar Adonis v Karan Rajan Rajarajan | W | 0-2 |
| Canada Open | 2019/07/03 17:40 | Ren, P. B. v Karan Rajan Rajarajan | L | 2-1 |
| Canada Open | 2019/07/03 00:40 | Karan Rajan Rajarajan v Munoz, Lino | W | 2-0 |
| Spanish Int. Qual | 2019/06/13 08:10 | Karan Rajan Rajarajan v Schaenzler, Lars | L | 1-2 |
| Spanish Int. Qual | 2019/06/12 13:30 | Rossi, Leo v Karan Rajan Rajarajan | W | 1-2 |
| Spanish Int. Qual | 2019/06/12 11:30 | Karan Rajan Rajarajan v Bernardo Atilano | W | 2-1 |
| Lithuanian Int. | 2019/06/08 08:30 | Karpov, Georgii v Karan Rajan Rajarajan | L | 2-0 |