Germany: M15 Uslar - Doubles - Main |
| 1/8-finals | van Schalkwyk C. S./van Schalkwyk C. H. | Al-Amin K./Hartig R. | WO. | details | 15.07.2025 |
World: Davis Cup - World Group II - Doubles - Preliminary |
| | Erasmus J./van Schalkwyk C. H. | Wong C. H./Wong C. | 0:2 (66:7, 5:7) | details | 02.02.2025 |
World: Davis Cup - Group III - Doubles - Main |
| | Erasmus J./van Schalkwyk C. H. | Gandonou P./Noudogbessi S. | 2:1 (2:6, 6:4, 6:1) | details | 18.07.2024 |
| | van Schalkwyk C. S./van Schalkwyk C. H. | Asaba A./Nortey I. | 1:2 (4:6, 6:3, 5:7) | details | 16.07.2024 |
South Africa: M25 Hillcrest - Doubles - Main |
| 1/8-finals | van Schalkwyk C. S./van Schalkwyk C. H. | Badenhorst D./Koenig L. | 1:2 (1:6, 6:4, 6:10) | details | 25.06.2024 |
South Africa: M15 Hillcrest - Doubles - Main |
| Quarter-finals | van Schalkwyk C. S./van Schalkwyk C. H. | Beckley A./Donski A. | 0:2 (4:6, 64:7) | details | 20.06.2024 |
| 1/8-finals | Aleshchev A./Savelev D. | van Schalkwyk C. S./van Schalkwyk C. H. | 0:2 (1:6, 3:6) | details | 19.06.2024 |
World: Davis Cup - Group III - Doubles - Main |
| | van Schalkwyk C. S./van Schalkwyk C. H. | Andre S./Dieng H. | 2:1 (6:2, 3:6, 7:5) | details | 10.08.2023 |
| | van Schalkwyk C. S./van Schalkwyk C. H. | Andre S./Languina Y. | CAN. | details | 10.08.2023 |
| | Badza B./Lock B. | van Schalkwyk C. S./van Schalkwyk C. H. | 0:2 (1:6, 4:6) | details | 09.08.2023 |
| | Lock B./Nzula L. | van Schalkwyk C. S./van Schalkwyk C. H. | CAN. | details | 09.08.2023 |
Egypt: M15 Sharm ElSheikh 15 - Doubles - Main |
| Quarter-finals | Artnak B./van Schalkwyk C. H. | Picchione A./Pozzani N. | 1:2 (3:6, 6:3, 5:10) | details | 27.10.2022 |
| 1/8-finals | Artnak B./van Schalkwyk C. H. | Binda A./Simakin I. | 2:1 (7:66, 3:6, 10:7) | details | 25.10.2022 |
USA: US Open - Doubles - Main |
| 1/16-finals | Koshis C./van Schalkwyk C. H. | Dietrich D./Prado Angelo J. C. | 1:2 (6:4, 63:7, 7:10) | details | 05.09.2022 |
World: Davis Cup - Group III - Doubles - Promotion |
| Final | van Schalkwyk C. S./van Schalkwyk C. H. | Lock B./Lock C. | 0:2 (0:6, 1:6) | details | 13.08.2022 |
World: Davis Cup - Group III - Doubles - Main |
| Group B | Lalami Laaroussi Y./Moundir A. | van Schalkwyk C. S./van Schalkwyk C. H. | CAN. | details | 12.08.2022 |
| Group B | van Schalkwyk C. S./van Schalkwyk C. H. | Ghedjemis R./Hamza Reguig S. | 2:1 (6:3, 3:6, 6:3) | details | 11.08.2022 |
| Group B | Dippenaar S./van Schalkwyk C. H. | Hamza Reguig S./Sahtali T. | CAN. | details | 11.08.2022 |
| Group B | Ominde D./Shah K. | van Schalkwyk C. S./van Schalkwyk C. H. | 0:2 (62:7, 2:6) | details | 10.08.2022 |
| Group B | Ominde D./Shah K. | Dippenaar S./van Schalkwyk C. H. | CAN. | details | 10.08.2022 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/16-finals | van Schalkwyk C. H./Vergara del Puerto M. A. | Gorzny S./Michelsen A. | 0:2 (5:7, 68:7) | details | 04.07.2022 |
France: French Open - Doubles - Main |
| 1/8-finals | Eriksson S./van Schalkwyk C. H. | Baris O./Weekes J. | 1:2 (4:6, 6:2, 5:10) | details | 31.05.2022 |
| 1/16-finals | Eriksson S./van Schalkwyk C. H. | Koshis C./Merida Aguilar D. | 2:0 (6:4, 7:5) | details | 30.05.2022 |