 Japan: Tokyo - Singles - Qualification |
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| Semi-finals | Wolfe J. | Ishizu S. | 2:1 (4:6, 6:1, 6:1) | dettagli | 20.09.2015 |
| Quarter-finals | Ishizu S. | Jurak Schreiber D. | 2:0 (6:4, 7:5) | dettagli | 19.09.2015 |
| Japan: Kurume - Singles - Main |
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| 1/16-finals | Nunome C. | Ishizu S. | CAN. | dettagli | 14.05.2014 |
| Japan: Gifu - Singles - Main |
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| 1/16-finals | Imanishi M. | Ishizu S. | 2:0 (6:4, 6:2) | dettagli | 29.04.2014 |
 Mexico: Acapulco - Singles - Qualification |
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| Quarter-finals | Fichman S. | Ishizu S. | 2:0 (6:1, 6:4) | dettagli | 22.02.2014 |
 Thailand: Pattaya - Singles - Qualification |
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| Final | Savchuk O. | Ishizu S. | 2:0 (6:0, 6:2) | dettagli | 27.01.2014 |
| Semi-finals | Ozaki R. | Ishizu S. | 1:2 (0:6, 6:4, 5:7) | dettagli | 26.01.2014 |
 Australia: Australian Open - Singles - Qualification |
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| Quarter-finals | Ishizu S. | Savchuk O. | 1:2 (3:6, 7:5, 4:6) | dettagli | 09.01.2014 |
 New Zealand: Auckland - Singles - Main |
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| Quarter-finals | Ishizu S. | Flipkens K. | 0:2 (4:6, 5:7) | dettagli | 02.01.2014 |
| 1/8-finals | Goerges J. | Ishizu S. | 1:2 (2:6, 6:3, 5:7) | dettagli | 01.01.2014 |
| 1/16-finals | Kontaveit A. | Ishizu S. | 1:2 (3:6, 6:1, 3:6) | dettagli | 31.12.2013 |
| New Zealand: Auckland - Singles - Qualification |
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| Final | Ishizu S. | Min G. | 2:0 (6:2, 6:4) | dettagli | 30.12.2013 |
| Semi-finals | Rezai A. | Ishizu S. | 1:2 (6:3, 3:6, 65:7) | dettagli | 29.12.2013 |
| Japan: Toyota - Singles - Main |
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| 1/16-finals | Kuwata H. | Ishizu S. | 2:0 (6:3, 6:3) | dettagli | 20.11.2013 |
| Australia: Bendigo 2 - Singles - Main |
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| Quarter-finals | Patterson T. | Ishizu S. | 2:0 (6:4, 6:2) | dettagli | 01.11.2013 |
| 1/8-finals | Bonaventure Y. | Ishizu S. | 0:2 (3:6, 3:6) | dettagli | 31.10.2013 |
| 1/16-finals | Hoynaski N. | Ishizu S. | 0:2 (0:6, 0:6) | dettagli | 29.10.2013 |
| Australia: Bendigo - Singles - Main |
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| Quarter-finals | Falconi I. | Ishizu S. | 2:0 (7:5, 6:4) | dettagli | 25.10.2013 |
| 1/8-finals | Peers S. | Ishizu S. | 1:2 (6:4, 62:7, 1:6) | dettagli | 24.10.2013 |
| 1/16-finals | Hayman E. | Ishizu S. | 1:2 (7:5, 5:7, 0:6) | dettagli | 23.10.2013 |
 Canada: Quebec City - Singles - Qualification |
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| Quarter-finals | Melichar-Martinez N. | Ishizu S. | 2:1 (4:6, 7:60, 6:4) | dettagli | 07.09.2013 |
 USA: US Open - Singles - Qualification |
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| Semi-finals | Ishizu S. | Tomljanovic A. | 1:2 (7:64, 4:6, 0:6) | dettagli | 23.08.2013 |
| Quarter-finals | Ishizu S. | Savic A. | 2:0 (7:5, 6:1) | dettagli | 21.08.2013 |
| Quarter-finals | Ishizu S. | Gronert S. | CAN. | dettagli | 21.08.2013 |
| Canada: Toronto - Singles - Qualification |
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| Semi-finals | Ishizu S. | Voskoboeva G. | 0:2 (2:6, 4:6) | dettagli | 03.08.2013 |
| USA: Carlsbad - Singles - Main |
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| 1/16-finals | Suarez Navarro C. | Ishizu S. | 2:0 (6:4, 6:3) | dettagli | 30.07.2013 |
| USA: Carlsbad - Singles - Qualification |
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| Final | Stevenson A. | Ishizu S. | WO. | dettagli | 29.07.2013 |
| Semi-finals | Muhammad A. | Ishizu S. | 1:2 (6:4, 4:6, 5:7) | dettagli | 29.07.2013 |
| Quarter-finals | Atawo R. | Ishizu S. | WO. | dettagli | 28.07.2013 |
| USA: Stanford - Singles - Qualification |
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| Semi-finals | Grandin N. | Ishizu S. | 2:1 (6:4, 67:7, 7:5) | dettagli | 21.07.2013 |
| Quarter-finals | Tan S. | Ishizu S. | 0:2 (1:6, 3:6) | dettagli | 20.07.2013 |
 United Kingdom: W100+H Nottingham 2 - Singles - Main |
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| 1/16-finals | Burnett N. | Ishizu S. | 2:0 (6:1, 6:3) | dettagli | 12.06.2013 |
| Japan: Karuizawa - Singles - Main |
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| Semi-finals | Hozumi E. | Ishizu S. | 2:0 (6:2, 6:1) | dettagli | 25.05.2013 |
| Quarter-finals | Tanaka M. | Ishizu S. | 1:2 (6:3, 2:6, 4:6) | dettagli | 24.05.2013 |
| 1/8-finals | Korashvili O. | Ishizu S. | 1:2 (1:6, 6:3, 1:6) | dettagli | 23.05.2013 |
| 1/16-finals | Iijima K. | Ishizu S. | 0:2 (1:6, 3:6) | dettagli | 21.05.2013 |
| Japan: Kurume - Singles - Main |
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| Quarter-finals | Namigata J. | Ishizu S. | 2:1 (6:4, 4:6, 6:1) | dettagli | 17.05.2013 |
| 1/8-finals | Sun S. | Ishizu S. | 0:2 (6:7, 4:6) | dettagli | 16.05.2013 |
| 1/16-finals | Bobusic B. | Ishizu S. | 0:2 (5:7, 1:6) | dettagli | 14.05.2013 |
| Japan: Fukuoka - Singles - Main |
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| 1/8-finals | Ishizu S. | Mestach A.S. | 1:2 (3:6, 6:1, 6:7) | dettagli | 09.05.2013 |
| 1/16-finals | Adamczak M. | Ishizu S. | 0:0 RET. (0:3) | dettagli | 08.05.2013 |
| Japan: Gifu - Singles - Main |
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| Semi-finals | Ishizu S. | Wang Q. | 0:2 (3:6, 2:6) | dettagli | 04.05.2013 |
| Quarter-finals | Abduraimova N. | Ishizu S. | 0:2 (6:7, 0:6) | dettagli | 03.05.2013 |
| 1/8-finals | Ishizu S. | Jabeur O. | 2:0 (6:3, 6:1) | dettagli | 02.05.2013 |
| 1/16-finals | Ishizu S. | Kuwata H. | 2:0 (6:2, 6:3) | dettagli | 30.04.2013 |
| USA: Pelham - Singles - Main |
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| 1/16-finals | Ishizu S. | Pegula J. | 0:2 (2:6, 1:6) | dettagli | 10.04.2013 |
| Australia: Bundaberg - Singles - Main |
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| 1/8-finals | Ishizu S. | Sema E. | 1:2 (6:1, 1:6, 4:6) | dettagli | 28.03.2013 |
| 1/16-finals | Ishizu S. | Lee P.-C. | 2:1 (4:6, 6:2, 6:3) | dettagli | 26.03.2013 |
| Australia: Ipswich - Singles - Main |
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| Quarter-finals | Pandzic J. | Ishizu S. | 2:0 (6:3, 6:4) | dettagli | 22.03.2013 |