France: French Open - Doubles - Main |
| 1/32-finals | Harris L./Klaasen R. | Carballes Baena R./Munar J. | 0:2 (5:7, 2:6) | details | 01.06.2023 |
Qatar: Doha - Doubles - Main |
| 1/8-finals | Lestienne C./Van De Zandschulp B. | Klaasen R./Reese H. | 2:1 (6:3, 3:6, 10:7) | details | 21.02.2023 |
World: Davis Cup - World Group II - Doubles - Preliminary |
| | Knaff A./Rodesch C. | Beckley A./Klaasen R. | 1:2 (4:6, 7:5, 3:6) | details | 05.02.2023 |
Australia: Australian Open - Doubles - Main |
| 1/8-finals | Harris L./Klaasen R. | Granollers M./Zeballos H. | 0:2 (1:6, 64:7) | details | 23.01.2023 |
| 1/16-finals | Doumbia S./Reboul F. | Harris L./Klaasen R. | 0:2 (4:6, 4:6) | details | 21.01.2023 |
| 1/32-finals | Harris L./Klaasen R. | Martinez P./Monteiro T. | 2:0 (7:65, 7:69) | details | 19.01.2023 |
Belgium: Antwerp - Doubles - Main |
| 1/8-finals | Klaasen R./Melo M. | Malisse X./Schwartzman D. | 0:2 (64:7, 5:7) | details | 18.10.2022 |
Spain: Gijon - Doubles - Main |
| 1/8-finals | Cacic N./Nys H. | Klaasen R./Melo M. | 2:1 (6:2, 69:7, 16:14) | details | 12.10.2022 |
South Korea: Seoul - Doubles - Main |
| Final | Klaasen R./Lammons N. | Barrientos N./Reyes-Varela M. A. | 2:0 (6:1, 7:5) | details | 02.10.2022 |
| Semi-finals | Klaasen R./Lammons N. | Bhambri Y./Myneni S. | 2:0 (7:5, 7:5) | details | 30.09.2022 |
| Quarter-finals | Klaasen R./Lammons N. | Gille S./Vliegen J. | 2:1 (7:63, 64:7, 10:7) | details | 29.09.2022 |
| 1/8-finals | Klaasen R./Lammons N. | Martinez P./Munar J. | 2:0 (7:64, 6:1) | details | 28.09.2022 |
World: Davis Cup - World Group II - Doubles - Main |
| | Donski A./Lazarov A. | Cronje L./Klaasen R. | 2:0 (6:3, 7:66) | details | 18.09.2022 |
| | Donski A./Nesterov P. | Cronje L./Klaasen R. | CAN. | details | 17.09.2022 |
USA: US Open - Doubles - Main |
| 1/16-finals | Glasspool L./Heliovaara H. | Klaasen R./Melo M. | 2:0 (6:4, 7:66) | details | 02.09.2022 |
| 1/32-finals | Brkic T./Gonzalez M. | Klaasen R./Melo M. | 1:2 (7:64, 63:7, 1:6) | details | 31.08.2022 |
Mexico: Los Cabos - Doubles - Main |
| Final | Blumberg W./Kecmanovic M. | Klaasen R./Melo M. | 2:0 (6:0, 6:1) | details | 07.08.2022 |
| Semi-finals | Klaasen R./Melo M. | Etcheverry T. M./Tseng C. H. | 2:0 (6:3, 6:3) | details | 06.08.2022 |
| Quarter-finals | Huey T./Johnson S. | Klaasen R./Melo M. | 0:2 (4:6, 66:7) | details | 04.08.2022 |
| 1/8-finals | Gille S./Vliegen J. | Klaasen R./Melo M. | 0:2 (64:7, 4:6) | details | 03.08.2022 |
USA: Atlanta - Doubles - Main |
| 1/8-finals | Escobar G./Reese H. | Klaasen R./Melo M. | 2:1 (3:6, 6:3, 10:5) | details | 26.07.2022 |
USA: Newport - Doubles - Main |
| Final | Klaasen R./Melo M. | Blumberg W./Johnson S. | 0:2 (4:6, 5:7) | details | 17.07.2022 |
| Semi-finals | Klaasen R./Melo M. | Galloway R./Lawson A. | 2:1 (4:6, 6:3, 11:9) | details | 16.07.2022 |
| Quarter-finals | Klaasen R./Melo M. | Auger-Aliassime F./Bonzi B. | 2:0 (6:4, 6:2) | details | 15.07.2022 |
| 1/8-finals | Klaasen R./Melo M. | Sabanov I./Sabanov M. | 2:0 (6:2, 6:4) | details | 11.07.2022 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/16-finals | Klaasen R./Melo M. | O'Mara J./Skupski K. | 0:3 (2:6, 4:6, 4:6) | details | 02.07.2022 |
| 1/32-finals | Puetz T./Venus M. | Klaasen R./Melo M. | 2:3 (6:4, 62:7, 5:7, 6:1, 66:7) | details | 30.06.2022 |
Spain: Mallorca - Doubles - Main |
| 1/8-finals | Klaasen R./Melo M. | Krawietz K./Mies A. | 1:2 (7:67, 3:6, 9:11) | details | 19.06.2022 |
Netherlands: Hertogenbosch - Doubles - Main |
| Semi-finals | Klaasen R./Melo M. | Ebden M./Purcell M. | 1:2 (6:1, 5:7, 6:10) | details | 11.06.2022 |
| Quarter-finals | Herbert P./Mahut N. | Klaasen R./Melo M. | 0:2 (66:7, 4:6) | details | 10.06.2022 |
| 1/8-finals | Gille S./Vliegen J. | Klaasen R./Melo M. | 0:2 (613:7, 4:6) | details | 09.06.2022 |
France: French Open - Doubles - Main |
| 1/16-finals | Haase R./Klaasen R. | Mektic N./Pavic M. | 1:2 (65:7, 6:4, 2:6) | details | 26.05.2022 |
| 1/32-finals | Gaston H./Simon G. | Haase R./Klaasen R. | 0:2 (3:6, 1:6) | details | 25.05.2022 |
France: Lyon - Doubles - Main |
| Quarter-finals | Klaasen R./Lammons N. | Gonzalez M./Melo M. | 1:2 (6:2, 65:7, 4:10) | details | 19.05.2022 |
| 1/8-finals | Kubot L./Roger-Vasselin E. | Klaasen R./Lammons N. | 0:2 (1:6, 62:7) | details | 17.05.2022 |
Italy: Rome - Doubles - Main |
| 1/8-finals | Klaasen R./McLachlan B. | Behar A./Escobar G. | 0:2 (65:7, 63:7) | details | 12.05.2022 |
| 1/16-finals | Gille S./Vliegen J. | Klaasen R./McLachlan B. | 0:2 (4:6, 63:7) | details | 09.05.2022 |
Spain: Madrid - Doubles - Main |
| 1/16-finals | Cabal J. S./Farah R. | Klaasen R./McLachlan B. | 2:1 (68:7, 7:63, 11:9) | details | 04.05.2022 |
Portugal: Estoril - Doubles - Main |
| Semi-finals | Klaasen R./McLachlan B. | Gonzalez M./Goransson A. | 1:2 (6:2, 67:7, 6:10) | details | 30.04.2022 |
| Quarter-finals | Erlich J./Harris L. | Klaasen R./McLachlan B. | 1:2 (6:4, 1:6, 4:10) | details | 28.04.2022 |
| 1/8-finals | Nys H./Zielinski J. | Klaasen R./McLachlan B. | 0:2 (4:6, 64:7) | details | 26.04.2022 |
USA: Miami - Doubles - Main |
| 1/16-finals | Klaasen R./McLachlan B. | Granollers M./Zeballos H. | 0:2 (2:6, 2:6) | details | 26.03.2022 |
USA: Indian Wells - Doubles - Main |
| 1/16-finals | Klaasen R./McLachlan B. | Lopez F./Tsitsipas S. | 0:2 (65:7, 4:6) | details | 11.03.2022 |
World: Davis Cup - World Group I - Doubles - Preliminary |
| | Cukierman D./Erlich J. | Harris L./Klaasen R. | 2:1 (7:63, 3:6, 6:3) | details | 05.03.2022 |
Mexico: Acapulco - Doubles - Main |
| 1/8-finals | Klaasen R./McLachlan B. | Hach Verdugo H./Isner J. | CAN. | details | 23.02.2022 |
France: Marseille - Doubles - Main |
| Final | Molchanov D./Rublev A. | Klaasen R./McLachlan B. | 2:1 (4:6, 7:5, 10:7) | details | 20.02.2022 |
| Semi-finals | Middelkoop M./Mies A. | Klaasen R./McLachlan B. | 1:2 (7:5, 3:6, 4:10) | details | 18.02.2022 |
| Quarter-finals | Roger-Vasselin E./Sitak A. | Klaasen R./McLachlan B. | 0:2 (63:7, 5:7) | details | 16.02.2022 |
| 1/8-finals | Doumbia S./Reboul F. | Klaasen R./McLachlan B. | 1:2 (5:7, 7:5, 3:10) | details | 14.02.2022 |
Netherlands: Rotterdam - Doubles - Main |
| 1/8-finals | Klaasen R./McLachlan B. | Bublik A./Karatsev A. | 1:2 (6:4, 4:6, 9:11) | details | 08.02.2022 |