| | |
| Mumbai $25,000 Hard | Mar 25 2007 |
| 1 | Sugano - Prerana Appineni | 6-2 6-0 |
| 2 | Yanchong Chen(2) - Sugano | 6-4 6-0 |
| | |
| Ho Chi Minh City $25,000 Hard | Apr 15 2007 |
| Qual 1 | Sugano(3) | bye |
| Qual 2 | Sugano(3) - Shi-Tong Shao | 6-2 6-1 |
| 1 | Ayaka Maekawa - Sugano | 6-3 6-1 |
| | |
| Chengdu $25,000 Hard | May 6 2007 |
| 1 | Si-Si Qiu - Sugano | 6-1 6-3 |
| | |
| Chengdu $25,000 Hard | May 13 2007 |
| 1 | Sugano - Jia Xiang Lu | 6-4 6-2 |
| 2 | Xinyun Han(6) - Sugano | 6-0 6-1 |
| | |
| Nagano $25,000 Carpet | May 27 2007 |
| Qual 1 | Sugano(3) - Saori Nakamura | 6-1 6-0 |
| Qual 2 | Sugano(3) - Miki Miyamura(9) | 6-4 6-0 |
| 1 | Sugano - Remi Tezuka | 6-4 6-2 |
| 2 | I-Hsuan Hwang(6) - Sugano | 6-1 6-2 |
| | |
| Gunma $25,000 Carpet | Jun 3 2007 |
| 1 | Remi Tezuka - Sugano | 6-2 6-2 |
| | |
| Changsha $25,000 Hard | Jun 10 2007 |
| Qual 1 | Sugano(2) - Dan-Ni Jiang | 6-4 6-4 |
| Qual 2 | Xuan-Yu Guo - Sugano(2) | 6-4 6-2 |
| | |
| Guangzhou $50,000 Hard | Jun 17 2007 |
| Qual 1 | Sugano(3) - Yue Wan | 6-1 6-4 |
| Qual 2 | Sugano(3) - Shan-Shan Li | 6-4 6-1 |
| Qual 3 | Jia-Jing Lu - Sugano(3) | 5-7 6-4 6-2 |
| | |
| Nagoya $25,000 Hard | Jul 8 2007 |
| Qual 1 | Sugano(7) - Yoshimi Kawasaki | 7-64 6-1 |
| Qual 2 | Sugano(7) - Minori Takemoto | 1-0 |
| Qual 3 | Sugano(7) - Mayumi Yamamoto(10) | 6-3 6-1 |
| 1 | Maya Kato - Sugano | 7-5 6-0 |
| | |
| Miyazaki $25,000 Carpet | Jul 15 2007 |
| Qual 1 | Sugano(6) - Kasumi Hattori | 6-2 6-0 |
| Qual 2 | Anne Yelsey(15) - Sugano(6) | 6-1 6-3 |
| | |
| Kurume $25,000 Carpet | Jul 22 2007 |
| Qual 1 | Sugano(6) - Airi Hagimoto | 6-3 7-5 |
| Qual 2 | Sugano(6) - Sakiko Shimizu | 6-3 7-5 |
| 1 | Kaori Onishi - Sugano | 6-1 7-5 |
| | |
| Obihiro $25,000 Carpet | Aug 5 2007 |
| 1 | Sugano - Mari Inoue | 6-1 6-73 6-3 |
| 2 | Akiko Yonemura(7) - Sugano | 6-0 6-2 |
| | |
| Saitama $10,000 Hard | Sep 2 2007 |
| 1 | Sugano(8) - Rie Koganei | 6-1 6-2 |
| 2 | Anastasia Malhotra - Sugano(8) | 6-3 6-2 |
| | |
| Kyoto $10,000 Carpet | Sep 9 2007 |
| 1 | Sugano(7) - Mari Inoue | 6-4 6-0 |
| 2 | Shona Lee - Sugano(7) | 6-3 6-3 |
| | |
| Tokyo $50,000 Hard | Sep 16 2007 |
| Qual 1 | Sugano(5) - Minori Takemoto | 7-5 5-7 6-4 |
| Qual 2 | Sugano(5) - Rie Imai | 7-5 6-4 |
| Qual 3 | Rika Fujiwara(2) - Sugano(5) | 6-2 6-2 |
| 1 | Yurika Sema(4) - Sugano | 6-0 6-2 |
| | |
| Tsukuba $25,000 Hard | Sep 23 2007 |
| Qual 1 | Natsumi Yokota - Sugano(7) | 1-6 6-1 6-2 |
| | |
| Japan Open Tier III Hard | Oct 7 2007 |
| Qual 1 | Sugano-WC - Yuka Kuroda | 2-6 7-5 6-1 |
| Qual 2 | Meng Yuan(3) - Sugano-WC | 6-2 6-2 |
| | |
| Beijing $25,000 Hard | Oct 14 2007 |
| 1 | Sugano - Hui Chen | 6-1 6-3 |
| 2 | Seiko Okamoto(3) - Sugano | 6-3 6-0 |
| | |
| Makinohara $25,000 Carpet | Oct 21 2007 |
| 1 | Sugano - Emiko Ito | 6-1 6-2 |
| 2 | Yanina Wickmayer(8) - Sugano | 6-2 6-0 |
| | |
| Hamanako $25,000 Carpet | Oct 28 2007 |
| 1 | Shiho Hisamatsu(6) - Sugano | 6-0 7-5 |
| | |
| Taoyuan $50,000 Hard | Nov 4 2007 |
| Qual 1 | Sugano(4) - Subi Sundaram | 6-2 6-0 |
| Qual 2 | Nungnadda Wannasuk - Sugano(4) | 6-0 6-0 |
| | |
| Xiamen $75,000 Hard | Dec 2 2007 |
| Qual 1 | Sugano - Erika Sema(6) | 6-0 6-1 |
| Qual 2 | Sugano - Ying-Ying Duan | 6-1 6-4 |
| Qual 3 | Yan Ze Xie(2) - Sugano | 6-2 6-0 |
| 1 | Kumiko Iijima - Sugano | 6-4 6-2 |