Estadio: Table 2 Round: 4
| WTT Contender Antalya - Dobles Mixtos | 2023/10/20 10:00 | Harimoto/Hayata v Gunduz/Altinkaya | L | 3-1 |
| WTT Contender Antalya - Dobles Mixtos | 2023/10/19 07:00 | Gunduz/Altinkaya v Dorr/Chasselin | W | 3-1 |
| WTT Feeder - Estocolmo - Dobles Mixtos | 2023/10/06 08:00 | Gunduz/Altinkaya v Schreiner/Jouti | L | 2-3 |
| WTT Feeder - Estocolmo - Dobles Mixtos | 2023/10/05 08:00 | Gunduz/Altinkaya v Madrid/Aceves | W | 3-0 |
| WTT Feeder - Estocolmo - Dobles Mixtos | 2023/10/04 08:00 | Kallberg/Moregard v Gunduz/Altinkaya | W | 2-3 |
| WTT Feeder Panagyurishte - Dobles Mixtos | 2023/08/31 07:35 | He/Zhou v Gunduz/Altinkaya | L | 3-0 |
| European Games XD | 2023/06/24 11:30 | Mittelham/Qiu v Gunduz/Altinkaya | L | 3-1 |
| ITTF World Championships - Dobles Mixtos | 2023/05/21 18:00 | Ionescu/Szocs v Gunduz/Altinkaya | L | 3-0 |