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A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
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| Kaya Belek $10,000 Clay | Feb 12 2012 |
| 1 | Ayukawa - Martina Gledacheva(5) | 6-3 6-2 |
| 2 | Eri Hozumi - Ayukawa | 6-2 2-6 6-1 |
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| Kaya Belek $10,000 Clay | Feb 26 2012 |
| 1 | Ayukawa - Andrea Gamiz(5) | 6-1 6-3 |
| 2 | Ayukawa - Yumi Miyazaki | 6-0 6-4 |
| QF | Ayukawa - Liana Ungur(2) | 6-3 6-74 6-2 |
| SF | Ayukawa - Ran Tian | 6-3 6-1 |
| F | Cristina-Andreea Mitu(3) - Ayukawa | 6-3 6-0 |
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| Miyazaki $10,000 Grass | Mar 18 2012 |
| 1 | Ayukawa - Anna Saito | 6-3 6-2 |
| 2 | Ayukawa - Ai Yamamoto | 6-1 0-6 7-64 |
| QF | Chinami Ogi(1) - Ayukawa | 7-5 6-2 |
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| Kofu $10,000 Hard | Mar 25 2012 |
| 1 | Ayukawa - Makiho Kozawa(8) | 6-4 6-4 |
| 2 | Fangzhou Liu - Ayukawa | 6-3 7-5 |
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| Nishi-Tama $10,000 Hard | Apr 1 2012 |
| 1 | Ayukawa - Shoko Yamamoto | 4-6 6-4 6-3 |
| 2 | Kumiko Iijima(1) - Ayukawa | 6-3 6-3 |
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| Fukuoka $50,000 Grass | May 13 2012 |
| Qual 1 | Ayukawa - Sumina Eshiro | 6-2 6-1 |
| Qual 2 | Zarina Diyas(3) - Ayukawa | 6-2 6-0 |
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| Kurume $50,000 Grass | May 20 2012 |
| Qual 1 | Chinami Ogi - Ayukawa | 6-3 6-3 |
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| Karuizawa $25,000 Grass | May 27 2012 |
| 1 | Ayukawa - Miyabi Inoue | 7-64 2-0 |
| 2 | Qiang Wang(4) - Ayukawa | 6-2 6-4 |
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| Tokyo $10,000 Hard | Jun 17 2012 |
| 1 | Yuka Mori - Ayukawa | 6-2 6-2 |
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| Goyang $25,000 Hard | Jun 24 2012 |
| Qual 1 | Ayukawa(14) - Ye-Ji Mun | 6-4 7-5 |
| Qual 2 | Ayukawa(14) - Su San Na Sim | 6-3 6-2 |
| Qual 3 | Ayukawa(14) - Ji-Sun Kim | 6-4 6-0 |
| 1 | Shengnan Sun - Ayukawa | 6-3 6-1 |
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| Incheon $25,000 Hard | Jul 1 2012 |
| Qual 1 | Ayukawa(14) - Wanting Liu | 6-3 6-2 |
| Qual 2 | Jin-A Lee - Ayukawa(14) | 7-5 6-4 |
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| Tsukuba $25,000 Hard | Sep 2 2012 |
| Qual 1 | Ayukawa - Makiho Kozawa(15) | 6-0 6-3 |
| Qual 2 | Ayukawa - Kaori Onishi | 6-1 6-0 |
| 1 | Yi-Miao Zhou - Ayukawa | 6-4 6-0 |
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| Noto $25,000 Grass | Sep 9 2012 |
| 1 | Kanae Hisami - Ayukawa | 6-3 7-5 |
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| Toyota $75,000 Carpet | Nov 25 2012 |
| Qual 1 | Miyu Kato - Ayukawa | 2-6 6-2 6-0 |
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| Bangkok $10,000 Hard | Dec 9 2012 |
| 1 | Ayukawa - Rachel Tredoux | 2-6 6-2 6-2 |
| 2 | Shiho Akita(7) - Ayukawa | 7-5 6-1 |
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| Bangkok $10,000 Hard | Dec 16 2012 |
| 1 | Ayukawa - Sabina Sharipova(1) | 6-3 7-5 |
| 2 | Ayukawa - Thanthita Suetrong | 6-4 6-1 |
| QF | Yafan Wang - Ayukawa | 6-4 6-4 |
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