USA: US Open - Mixed Doubles - Main |
| 1/16-finals | Stevenson A./O'Brien A. | Vis C./Adams D. | 0:2 (3:6, 64:7) | dettagli | 30.08.2001 |
USA: US Open - Doubles - Main |
| 1/32-finals | Black B./Stark J. | Gimelstob J./O'Brien A. | 2:0 (6:4, 6:0) | dettagli | 30.08.2001 |
USA: Washington - Doubles - Main |
| 1/16-finals | Barnard M./Thomas J. | Gimelstob J./O'Brien A. | 2:0 (6:2, 6:2) | dettagli | 14.08.2001 |
USA: Cincinnati - Doubles - Main |
| 1/8-finals | Bhupathi M./Paes L. | Gimelstob J./O'Brien A. | 2:1 (6:4, 3:6, 6:3) | dettagli | 11.08.2001 |
| 1/16-finals | Gimelstob J./O'Brien A. | Lareau S./Schalken S. | 2:0 (7:6, 6:3) | dettagli | 07.08.2001 |
Canada: Montreal - Doubles - Main |
| 1/8-finals | Tarango J./Vacek D. | Humphries S./O'Brien A. | 2:0 (7:6, 7:6) | dettagli | 01.08.2001 |
| 1/16-finals | Humphries S./O'Brien A. | Bhupathi M./Paes L. | 2:1 (6:3, 3:6, 6:3) | dettagli | 30.07.2001 |
USA: Los Angeles - Doubles - Main |
| Semi-finals | Gambill J./Roddick A. | Gimelstob J./O'Brien A. | 2:1 (7:6, 4:6, 6:3) | dettagli | 28.07.2001 |
| Quarter-finals | Gimelstob J./O'Brien A. | Schalken S./Vacek D. | 2:1 (6:4, 4:6, 6:3) | dettagli | 25.07.2001 |
| 1/8-finals | Gimelstob J./O'Brien A. | Blake J./Humphries S. | 2:0 (6:3, 6:3) | dettagli | 24.07.2001 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/32-finals | Arthurs W./Ellwood B. | Black B./O'Brien A. | 3:2 (3:6, 2:6, 6:3, 7:5, 6:2) | dettagli | 25.06.2001 |
United Kingdom: London - Doubles - Main |
| Quarter-finals | Taino E./Wheaton D. | Black B./O'Brien A. | 2:0 (6:3, 6:2) | dettagli | 15.06.2001 |
| 1/8-finals | Black B./O'Brien A. | Aspelin S./Landsberg J. | 2:0 (6:3, 6:4) | dettagli | 14.06.2001 |
| 1/16-finals | Black B./O'Brien A. | Damm M./Suk C. | 2:1 (6:1, 6:7, 6:2) | dettagli | 12.06.2001 |
France: French Open - Doubles - Main |
| 1/32-finals | Aspelin S./Landsberg J. | Black B./O'Brien A. | 2:0 (7:6, 6:3) | dettagli | 31.05.2001 |
Germany: Hamburg - Doubles - Main |
| 1/16-finals | Bryan B./Bryan M. | Federer R./O'Brien A. | 2:0 (7:5, 6:3) | dettagli | 15.05.2001 |
Italy: Rome - Doubles - Main |
| 1/16-finals | Oncins J./Orsanic D. | Knowles M./O'Brien A. | 2:1 (6:4, 2:6, 6:0) | dettagli | 07.05.2001 |
USA: Houston - Doubles - Main |
| 1/8-finals | Bhupathi M./Paes L. | Fish M./O'Brien A. | 2:1 (5:7, 7:5, 6:4) | dettagli | 01.05.2001 |
USA: Miami - Doubles - Main |
| 1/16-finals | Bryan B./Bryan M. | Lareau S./O'Brien A. | 1:1 (7:5, 4:6, 6:3) | dettagli | 24.03.2001 |
USA: Indian Wells - Doubles - Main |
| 1/8-finals | Knowles M./MacPhie B. | Lareau S./O'Brien A. | 2:0 (6:4, 6:1) | dettagli | 14.03.2001 |
| 1/16-finals | Lareau S./O'Brien A. | Bhupathi M./Paes L. | 2:0 (6:4, 6:4) | dettagli | 12.03.2001 |
USA: Scottsdale - Doubles - Main |
| Quarter-finals | Bryan B./Bryan M. | O'Brien A./Stark J. | 2:0 (6:3, 7:6) | dettagli | 07.03.2001 |
| 1/8-finals | O'Brien A./Stark J. | Burgsmuller L./Vemic D. | 2:1 (7:5, 5:7, 6:2) | dettagli | 05.03.2001 |
USA: San Jose - Doubles - Main |
| Quarter-finals | Palmer J./Woodruff C. | Lareau S./O'Brien A. | 2:0 (6:3, 6:3) | dettagli | 28.02.2001 |
| 1/8-finals | Lareau S./O'Brien A. | Jensen L./Jensen M. | 2:0 (6:2, 7:5) | dettagli | 26.02.2001 |
USA: Memphis - Doubles - Main |
| Final | Bryan B./Bryan M. | O'Brien A./Stark J. | 2:0 (6:3, 7:6) | dettagli | 25.02.2001 |
| Semi-finals | O'Brien A./Stark J. | Knowles M./MacPhie B. | 2:1 (4:6, 7:5, 6:4) | dettagli | 24.02.2001 |
| Quarter-finals | O'Brien A./Stark J. | Landsberg J./Wakefield M. | 2:0 (7:5, 7:6) | dettagli | 23.02.2001 |
| 1/8-finals | O'Brien A./Stark J. | Levy H./Sa A. | 2:0 (6:2, 6:3) | dettagli | 21.02.2001 |
Australia: Australian Open - Doubles - Main |
| 1/8-finals | Eagle J./Florent A. | Lareau S./O'Brien A. | 2:1 (5:7, 6:3, 6:4) | dettagli | 23.01.2001 |
| 1/16-finals | Lareau S./O'Brien A. | Arnold-Ker L./Etlis G. | 2:1 (3:6, 6:1, 6:4) | dettagli | 19.01.2001 |
| 1/32-finals | Lareau S./O'Brien A. | MacPherson D./Stafford G. | 2:0 (6:3, 6:1) | dettagli | 17.01.2001 |
World: World Tour Finals - Bangalore - Doubles - Main |
| Group B | O'Brien A./Palmer J. | Bhupathi M./Paes L. | 2:1 (2:6, 6:4, 7:65) | dettagli | 14.12.2000 |
| Group B | Haarhuis P./Stolle S. | O'Brien A./Palmer J. | 2:1 (5:7, 6:2, 6:4) | dettagli | 13.12.2000 |
| Group B | Johnson D./Norval P. | O'Brien A./Palmer J. | 2:0 (7:5, 7:6) | dettagli | 12.12.2000 |
France: Paris - Doubles - Main |
| Semi-finals | Kulti N./Mirnyi M. | O'Brien A./Palmer J. | 2:1 (5:7, 7:5, 6:4) | dettagli | 18.11.2000 |
| Quarter-finals | Hill M./Tarango J. | O'Brien A./Palmer J. | 1:2 (3:6, 6:4, 62:7) | dettagli | 17.11.2000 |
| 1/8-finals | Escude N./Llodra M. | O'Brien A./Palmer J. | 0:2 (3:6, 3:6) | dettagli | 15.11.2000 |