 Australia: Australian Open - Doubles - Main |
|---|
| Quarter-finals | Bollegraf M./Gregory L. | Fendick P./Fernandez M. J. | 0:2 (4:6, 4:6) | details | 23.01.1991 |
| 1/8-finals | Bollegraf M./Gregory L. | Burgin E./Fairbank-Nideffer R. | 2:1 (5:7, 6:4, 11:9) | details | 20.01.1991 |
| 1/16-finals | Bollegraf M./Gregory L. | Minter A./Morton-Rodgers T. | 2:0 (6:2, 6:4) | details | 17.01.1991 |
| 1/32-finals | Bollegraf M./Gregory L. | Huber A./Rittner B. | 2:0 (6:0, 6:0) | details | 14.01.1991 |
| Australia: Sydney - Doubles - Main |
|---|
| 1/8-finals | McQuillan R./Tanvier C. | Bollegraf M./Gregory L. | 2:1 (6:3, 1:6, 7:5) | details | 09.01.1991 |
| 1/16-finals | Lindstrom M./Ludloff H. | Bollegraf M./Gregory L. | 0:2 (6:7, 6:7) | details | 07.01.1991 |
| Australia: Brisbane 2 - Doubles - Main |
|---|
| Semi-finals | Bollegraf M./Gregory L. | Fendick P./Sukova H. | 1:2 (3:6, 6:4, 4:6) | details | 05.01.1991 |
| Quarter-finals | Pfaff E./Schultz-McCarthy B. | Bollegraf M./Gregory L. | 1:2 (7:6, 6:7, 1:6) | details | 04.01.1991 |
| 1/8-finals | Kschwendt K./Langrova P. | Bollegraf M./Gregory L. | 0:2 (5:7, 3:6) | details | 02.01.1991 |
 USA: Oklahoma City - Doubles - Main |
|---|
| Final | Bollegraf M./Gregory L. | Daniels M./Prausa W. | 0:2 (5:7, 2:6) | details | 25.02.1990 |
| Semi-finals | Bollegraf M./Gregory L. | Schultz-McCarthy B./Vis C. | 2:0 (6:3, 7:6) | details | 24.02.1990 |
| Quarter-finals | Bollegraf M./Gregory L. | Camille B./Hiraki R. | 2:1 (3:6, 6:3, 6:3) | details | 21.02.1990 |
| 1/8-finals | Bollegraf M./Gregory L. | Allen L./MacGregor C. | 2:1 (3:6, 6:4, 6:2) | details | 19.02.1990 |
