 Japan: Karuizawa - Singles - Main |
|---|
| 1/16-finals | Hozumi E. | Kozawa M. | 2:0 (6:1, 6:0) | details | 22.05.2013 |
| Japan: Kyoto - Singles - Main |
|---|
| Semi-finals | Hibino N. | Kozawa M. | 2:1 (6:1, 0:6, 6:2) | details | 14.09.2012 |
| Quarter-finals | Onishi K. | Kozawa M. | 1:2 (7:6, 2:6, 2:6) | details | 13.09.2012 |
| 1/8-finals | Mori Y. | Kozawa M. | 1:2 (7:5, 4:6, 3:6) | details | 12.09.2012 |
| 1/16-finals | Nakano Y. | Kozawa M. | 0:2 (1:6, 5:7) | details | 10.09.2012 |
 Thailand: Pattaya 2 - Singles - Main |
|---|
| 1/8-finals | Keir A. | Kozawa M. | 2:0 (6:3, 6:4) | details | 04.07.2012 |
| 1/16-finals | Mutaguchi E. | Kozawa M. | 0:2 (3:6, 4:6) | details | 02.07.2012 |
| Thailand: Pattaya - Singles - Main |
|---|
| 1/8-finals | Nunome C. | Kozawa M. | 2:0 (6:2, 6:3) | details | 27.06.2012 |
| 1/16-finals | Wongteanchai Varu. | Kozawa M. | 1:2 (2:6, 6:1, 1:6) | details | 25.06.2012 |
| Japan: Tokyo - Singles - Main |
|---|
| 1/8-finals | Kowase M. | Kozawa M. | 2:1 (7:5, 3:6, 6:4) | details | 14.06.2012 |
| 1/16-finals | Iha K. | Kozawa M. | 0:2 (1:6, 5:7) | details | 13.06.2012 |
| Japan: Karuizawa - Singles - Main |
|---|
| 1/8-finals | Kozawa M. | Namigata J. | 1:2 (4:6, 6:4, 4:6) | details | 24.05.2012 |
| 1/16-finals | Kozawa M. | Takayama C. | 2:0 (6:4, 7:6) | details | 22.05.2012 |
 USA: Plantation - Singles - Qualification |
|---|
| Quarter-finals | Boev M. | Kozawa M. | 2:1 (2:6, 6:4, 6:2) | details | 15.01.2012 |
| USA: Innisbrook - Singles - Qualification |
|---|
| Quarter-finals | Kermet K. | Kozawa M. | 2:1 (1:6, 6:4, 6:3) | details | 08.01.2012 |
