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 |
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 |
Australia: Australian Open - Doubles - Main |
| 1/16-finals | Gavrielides L./Kukasian A. | Brady P./van Schalkwyk C. H. | 1:1 RET. (6:2, 66:7, 9:4) | details | 24.01.2022 |
World: Davis Cup - Group IV - Doubles - Main |
| | van Schalkwyk C. S./van Schalkwyk C. H. | Aguma B./Ayella S. P. | 2:0 (6:1, 6:0) | details | 25.06.2021 |
| | van Schalkwyk C. S./van Schalkwyk C. H. | Ayella S. P./Birungi E. | CAN. | details | 25.06.2021 |