United Kingdom: Wimbledon - Mixed Doubles - Main |
| 1/8-finals | Knowles M./Arendt N. | Wakefield M./De Villiers N. | 1:2 (4:6, 6:4, 5:7) | dettagli | 22.06.2001 |
| 1/16-finals | Knowles M./Arendt N. | Stafford G./McNeil L. | 2:1 (7:5, 3:6, 6:4) | dettagli | 20.06.2001 |
| 1/32-finals | Knowles M./Arendt N. | Capriati S./Capriati J. | 2:0 (6:1, 6:4) | dettagli | 18.06.2001 |
France: French Open - Mixed Doubles - Main |
| 1/8-finals | Knowles M./Arendt N. | Golmard J./Fusai A. | 1:2 (7:5, 4:6, 0:6) | dettagli | 05.06.2001 |
| 1/16-finals | Knowles M./Arendt N. | Humphries S./Pratt N. | 2:0 (6:4, 6:4) | dettagli | 04.06.2001 |
Australia: Australian Open - Mixed Doubles - Main |
| Quarter-finals | Eagle J./Schett B. | Knowles M./Arendt N. | 2:1 (6:3, 5:7, 10:5) | dettagli | 24.01.2001 |
| 1/8-finals | Knowles M./Arendt N. | Draper S./McShea L. | 2:0 (7:63, 6:3) | dettagli | 23.01.2001 |
| 1/16-finals | Knowles M./Arendt N. | Kratzmann A./Huber L. | 2:0 (6:2, 6:2) | dettagli | 22.01.2001 |