USA: Los Angeles - Doubles - Main |
| Quarter-finals | Kilderry P./Stolle S. | Keil M./Williams J. | 2:0 (6:4, 6:4) | details | 26.07.2000 |
| 1/8-finals | Keil M./Williams J. | Sprengelmeyer M./Spencer K. | 2:0 (7:5, 6:4) | details | 24.07.2000 |
USA: Newport - Doubles - Main |
| 1/8-finals | Liukko V./Wessels P. | Keil M./Russell M. | 2:0 (6:4, 7:68) | details | 10.07.2000 |
Morocco: Casablanca - Doubles - Main |
| 1/8-finals | Benfele-Alvarez E./Martin A. | Arazi H./Keil M. | 2:0 (6:1, 6:4) | details | 10.04.2000 |
Australia: Australian Open - Doubles - Main |
| 1/32-finals | Ferreira E./Leach R. | Ivanisevic G./Keil M. | 2:0 (6:3, 6:4) | details | 18.01.2000 |
Australia: Sydney - Doubles - Main |
| 1/8-finals | Keil M./Norval P. | Kitinov A./Olhovskiy A. | 1:2 (6:4, 4:6, 4:6) | details | 11.01.2000 |
Sweden: Stockholm - Doubles - Main |
| 1/8-finals | Keil M./Kohlmann M. | Bastl G./Peterson A. | 0:2 (3:6, 3:6) | details | 08.11.1999 |
France: Lyon 2 - Doubles - Main |
| 1/8-finals | Keil M./Woodruff C. | Escude N./Raoux G. | 1:2 (1:6, 7:62, 1:6) | details | 18.10.1999 |
Switzerland: Basel - Doubles - Main |
| 1/8-finals | Heuberger I./Keil M. | Haygarth B./Kitinov A. | 1:2 (6:3, 61:7, 2:6) | details | 04.10.1999 |
France: Toulouse - Doubles - Main |
| 1/8-finals | Koves G./Thomas J. | Keil M./Nyborg P. | 1:0 RET. (7:65, 3:0) | details | 27.09.1999 |
Uzbekistan: Tashkent - Doubles - Main |
| Final | Keil M./Manta L. | Ogorodov O./Rosset M. | 0:2 (64:7, 61:7) | details | 19.09.1999 |
| Semi-finals | Keil M./Manta L. | Sargsian S./Thomas J. | 2:0 (7:65, 7:65) | details | 17.09.1999 |
| Quarter-finals | Keil M./Manta L. | Ljubicic I./Tieleman L. | 2:0 (7:64, 6:4) | details | 15.09.1999 |
| 1/8-finals | Haggard C./Vacek D. | Keil M./Manta L. | 1:2 (6:4, 4:6, 68:7) | details | 13.09.1999 |
USA: US Open - Doubles - Main |
| 1/16-finals | Keil M./Lobo L. | Lareau S./O'Brien A. | 0:2 (4:6, 0:6) | details | 03.09.1999 |
| 1/32-finals | Keil M./Lobo L. | Garcia M./Roditi D. | 2:1 (2:6, 6:4, 6:4) | details | 01.09.1999 |
USA: Boston - Doubles - Main |
| 1/8-finals | Kilderry P./Raoux G. | Dilucia D./Keil M. | 2:1 (6:4, 3:6, 6:2) | details | 23.08.1999 |
USA: Washington - Doubles - Main |
| 1/16-finals | Dilucia D./Keil M. | Humphries S./Hill M. | 0:2 (64:7, 3:6) | details | 16.08.1999 |
San Marino: San Marino - Doubles - Main |
| 1/8-finals | Cibulec T./Vemic D. | Keil M./Talbot B. | 2:1 (4:6, 6:1, 6:3) | details | 09.08.1999 |
Austria: Kitzbuhel - Doubles - Main |
| 1/16-finals | Hildebrand T./Keil M. | Calatrava A./Vemic D. | 1:1 RET. (4:6, 6:3, 0:4) | details | 26.07.1999 |
Germany: Stuttgart - Doubles - Main |
| 1/8-finals | Adams D./Vizner P. | Keil M./Meligeni F. | 2:0 (6:3, 6:1) | details | 21.07.1999 |
| 1/16-finals | Keil M./Meligeni F. | Fitz S./Sinner M. | 2:1 (6:4, 63:7, 6:3) | details | 19.07.1999 |
Sweden: Bastad - Doubles - Main |
| 1/8-finals | Aspelin S./Landsberg J. | Keil M./Rodriguez M. | 2:1 (2:6, 6:2, 6:3) | details | 05.07.1999 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/32-finals | Godwin N./Keil M. | Navarra M./Pescosolido S. | 0:3 (3:6, 4:6, 60:7) | details | 28.06.1999 |
United Kingdom: Nottingham - Doubles - Main |
| 1/8-finals | Adams D./De Jager J. | Albano P./Keil M. | 2:0 (6:4, 6:0) | details | 14.06.1999 |
France: French Open - Mixed Doubles - Main |
| 1/32-finals | Stafford G./De Villiers E. | Keil M./McShea L. | 2:1 (7:64, 4:6, 6:2) | details | 28.05.1999 |
France: French Open - Doubles - Main |
| 1/32-finals | Dilucia D./Keil M. | Black B./Ferreira W. | 0:2 (4:6, 5:7) | details | 25.05.1999 |
Austria: St. Poelten - Doubles - Main |
| 1/8-finals | Florent A./Olhovskiy A. | Keil M./Nyborg P. | 2:0 (6:3, 6:2) | details | 17.05.1999 |
Italy: Rome - Doubles - Main |
| 1/16-finals | Reneberg R./Stark J. | Keil M./Meligeni F. | 2:0 (6:2, 6:2) | details | 10.05.1999 |
Czech Republic: Prague - Doubles - Main |
| Final | Damm M./Stepanek R. | Keil M./Lapentti N. | 2:0 (6:0, 6:2) | details | 02.05.1999 |
| Semi-finals | Palmer J./Tarango J. | Keil M./Lapentti N. | 0:2 (4:6, 2:6) | details | 30.04.1999 |
| Quarter-finals | Keil M./Lapentti N. | Novak J./Rikl D. | WO. | details | 28.04.1999 |
| 1/8-finals | Keil M./Lapentti N. | Ardinghi M./Groen S. | 2:1 (3:6, 6:3, 6:3) | details | 26.04.1999 |
Japan: Tokyo - Doubles - Main |
| 1/16-finals | Motomura G./Mamiit C. | Keil M./Knippschild J. | 2:1 (3:6, 7:6, 7:6) | details | 12.04.1999 |
India: Chennai - Doubles - Main |
| Quarter-finals | Bhupathi M./Paes L. | Keil M./Sa A. | 2:1 (6:1, 2:6, 7:6) | details | 08.04.1999 |
| 1/8-finals | Keil M./Sa A. | Groen S./Wessels P. | 2:0 (6:4, 7:5) | details | 06.04.1999 |
Denmark: Copenhagen - Doubles - Main |
| Quarter-finals | Kohlmann M./Veglio F. | Godwin N./Keil M. | 2:1 (3:6, 6:3, 6:4) | details | 04.03.1999 |
| 1/8-finals | Godwin N./Keil M. | Kulti N./Tillstrom M. | 2:0 (6:2, 7:6) | details | 02.03.1999 |
Netherlands: Rotterdam - Doubles - Main |
| Quarter-finals | Norval P./Ullyett K. | Godwin N./Keil M. | 2:0 (7:6, 7:6) | details | 17.02.1999 |
| 1/8-finals | Carbonell T./Haggard C. | Godwin N./Keil M. | 0:2 (6:7, 4:6) | details | 15.02.1999 |
Russia: St. Petersburg - Doubles - Main |
| Quarter-finals | Oosting M./Pavel A. | Keil M./Tillstrom M. | 2:0 (7:6, 6:3) | details | 10.02.1999 |
| 1/8-finals | Gaidinov S./Pugayev K. | Keil M./Tillstrom M. | 0:2 (2:6, 1:6) | details | 08.02.1999 |
France: Marseille - Doubles - Main |
| 1/8-finals | Keil M./Kempers T. | Carbonell T./Gimelstob J. | 1:2 (7:6, 4:6, 2:6) | details | 01.02.1999 |
Australia: Australian Open - Doubles - Main |
| 1/32-finals | Black B./Ferreira W. | Keil M./Knippschild J. | 2:0 (7:5, 6:1) | details | 18.01.1999 |
Sweden: Stockholm - Doubles - Main |
| Quarter-finals | Haggard C./Nyborg P. | Keil M./Ketola T. | 2:0 (7:5, 6:4) | details | 11.11.1998 |
| 1/8-finals | Apell J./Norman M. | Keil M./Ketola T. | 1:2 (4:6, 7:6, 4:6) | details | 09.11.1998 |
Singapore: Singapore - Doubles - Main |
| 1/8-finals | Keil M./Middleton T. J. | Bhupathi M./Paes L. | 0:2 (4:6, 3:6) | details | 13.10.1998 |
France: Lyon 2 - Doubles - Main |
| 1/8-finals | Keil M./Rafter P. | MacPhie B./Reneberg R. | 0:2 (6:7, 4:6) | details | 13.10.1998 |
China: Shanghai 2 - Doubles - Main |
| Quarter-finals | Woodforde M./Woodbridge T. | Keil M./Middleton T. J. | 2:0 (6:2, 6:1) | details | 07.10.1998 |
| 1/8-finals | Braasch K./Kohlmann M. | Keil M./Middleton T. J. | 0:2 (6:7, 4:6) | details | 05.10.1998 |