USA: US Open - Mixed Doubles - Main |
| Quarter-finals | Po K./Johnson D. | Savchenko-Neiland L./Leach R. | 2:0 (6:2, 6:4) | dettagli | 08.09.1999 |
| 1/8-finals | Spirlea I./Orsanic D. | Savchenko-Neiland L./Leach R. | 0:2 (4:6, 3:6) | dettagli | 05.09.1999 |
| 1/16-finals | Graham D./Stolle S. | Savchenko-Neiland L./Leach R. | 0:2 (68:7, 67:7) | dettagli | 02.09.1999 |
United Kingdom: Wimbledon - Mixed Doubles - Main |
| Quarter-finals | Leach R./Savchenko-Neiland L. | Bjorkman J./Kournikova A. | 1:2 (66:7, 6:4, 3:6) | dettagli | 06.07.1999 |
| 1/8-finals | Leach R./Savchenko-Neiland L. | Johnson D./Molik A. | 2:1 (6:4, 3:6, 6:2) | dettagli | 03.07.1999 |
| 1/16-finals | Leach R./Savchenko-Neiland L. | Rodriguez M./Labat F. | 2:1 (3:6, 6:3, 6:2) | dettagli | 01.07.1999 |
| 1/32-finals | Leach R./Savchenko-Neiland L. | Grant G./Huber L. | 2:0 (6:1, 6:4) | dettagli | 29.06.1999 |
France: French Open - Mixed Doubles - Main |
| Final | Leach R./Savchenko-Neiland L. | Norval P./Srebotnik K. | 1:2 (3:6, 6:3, 3:6) | dettagli | 06.06.1999 |
| Semi-finals | Leach R./Savchenko-Neiland L. | Woodforde M./Likhovtseva E. | 2:1 (6:1, 3:6, 6:1) | dettagli | 05.06.1999 |
| Quarter-finals | Paes L./Raymond L. | Leach R./Savchenko-Neiland L. | 0:2 (68:7, 3:6) | dettagli | 03.06.1999 |
| 1/8-finals | Orsanic D./Selyutina I. | Leach R./Savchenko-Neiland L. | 1:2 (3:6, 6:3, 3:6) | dettagli | 01.06.1999 |
| 1/16-finals | Nyborg P./De Lone E. | Leach R./Savchenko-Neiland L. | 0:2 (4:6, 3:6) | dettagli | 30.05.1999 |
Australia: Australian Open - Mixed Doubles - Main |
| 1/8-finals | Leach R./Savchenko-Neiland L. | Ferreira E./Graham D. | 1:2 (4:6, 6:2, 4:6) | dettagli | 23.01.1999 |
| 1/16-finals | Leach R./Savchenko-Neiland L. | Arthurs W./Guse K. | 2:1 (4:6, 6:3, 7:65) | dettagli | 18.01.1999 |