Thailand: Bangkok - Singles - Qualification
Quarter-finals Ghedin R. Ishii Y. 2:0 (6:1, 6:3) dettagli 27.08.2011
Australia: Australian Open - Singles - Qualification
Quarter-finals Ishii Y. Lisnard J. 0:2 (4:6, 4:6) dettagli 12.01.2005
Japan: Tokyo - Singles - Main
1/32-finals Blake J. Ishii Y. 2:0 (6:3, 6:4) dettagli 02.10.2001
China: Shanghai 2 - Singles - Main
1/16-finals Lee H. Ishii Y. 2:0 (6:1, 6:3) dettagli 17.09.2001
USA: US Open - Singles - Qualification
Quarter-finals Ishii Y. Carraz G. 1:2 (5:7, 7:62 , 3:6) dettagli 21.08.2001
Japan: Tokyo - Singles - Main
1/32-finals Arthurs W. Ishii Y. 2:0 (6:3, 6:4) dettagli 09.10.2000
USA: US Open - Singles - Qualification
Quarter-finals Ishii Y. Goellner M. 1:2 (6:4, 4:6, 2:6) dettagli 22.08.2000
United Kingdom: Wimbledon - Singles - Qualification
Quarter-finals Vemic D. Ishii Y. 2:0 (6:2, 6:4) dettagli 19.06.2000
France: French Open - Singles - Qualification
Quarter-finals Gross O. Ishii Y. 2:0 (6:3, 6:1) dettagli 22.05.2000
Australia: Australian Open - Singles - Qualification
Final Rochus C. Ishii Y. 2:0 (6:3, 7:64 ) dettagli 14.01.2000
Semi-finals Blake J. Ishii Y. 1:2 (4:6, 7:5, 8:10) dettagli 13.01.2000
Quarter-finals Ishii Y. Pescariu D-M. 2:0 (6:2, 6:4) dettagli 12.01.2000
India: Chennai - Singles - Main
1/16-finals Ishii Y. Vanek J. 0:2 (3:6, 4:6) dettagli 03.01.2000
United Kingdom: Wimbledon - Singles - Qualification
Semi-finals Tillstrom M. Ishii Y. 2:0 (6:2, 6:3) dettagli 18.06.1999
Quarter-finals Ishii Y. Charpentier M. 2:1 (1:6, 6:1, 6:4) dettagli 17.06.1999
USA: US Open - Singles - Qualification
Quarter-finals Ishii Y. Wheaton D. 0:2 (5:7, 3:6) dettagli 25.08.1998
United Kingdom: Wimbledon - Singles - Qualification
Semi-finals Ishii Y. Zingman A. 1:2 (3:6, 6:1, 3:6) dettagli 19.06.1998
Quarter-finals Ishii Y. Grossi E. 2:0 (6:4, 6:1) dettagli 17.06.1998