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| Kaya Belek $10,000 Clay | Feb 5 2012 |
| 1 | Miyazaki(8) - Anastasiya Yepisheva | 6-2 6-1 |
| 2 | Yelena Nemchen - Miyazaki(8) | 4-6 6-4 7-66 |
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| Kaya Belek $10,000 Clay | Feb 12 2012 |
| 1 | Miyazaki - Natasha Fourouclas | 7-5 6-3 |
| 2 | Natalie Piquion(1) - Miyazaki | 6-4 6-2 |
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| Kaya Belek $10,000 Clay | Feb 19 2012 |
| 1 | Liana Ungur(2) - Miyazaki | 6-1 6-2 |
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| Kaya Belek $10,000 Clay | Feb 26 2012 |
| 1 | Miyazaki - Mari Tanaka | 6-2 6-0 |
| 2 | Mana Ayukawa - Miyazaki | 6-0 6-4 |
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| Miyazaki $10,000 Grass | Mar 18 2012 |
| 1 | Miyazaki(6) - Tomoko Sugano | 6-1 6-1 |
| 2 | Miyazaki(6) - Akari Inoue | 5-7 6-4 6-1 |
| QF | Miyazaki(6) - Ai Koga | 7-5 5-7 7-5 |
| SF | Miyazaki(6) - Yuka Higuchi | 7-66 6-1 |
| F | Makoto Ninomiya - Miyazaki(6) | 6-0 6-75 6-0 |
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| Kofu $10,000 Hard | Mar 25 2012 |
| 1 | Ayumi Oka(3) - Miyazaki | 3-6 6-4 6-2 |
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| Nishi-Tama $10,000 Hard | Apr 1 2012 |
| 1 | Akiko Yonemura(2) - Miyazaki | 3-6 6-0 6-2 |
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| Wenshan $50,000 Hard | Apr 15 2012 |
| Qual 1 | Miyazaki - Ziyue Sun | 1-6 7-5 7-63 |
| Qual 2 | Kai-Lin Zhang(6) - Miyazaki | 6-1 6-1 |
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| Gifu $50,000 Hard | May 6 2012 |
| Qual 1 | Chin-Wei Chan - Miyazaki | 6-4 6-73 6-3 |
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| Fukuoka $50,000 Grass | May 13 2012 |
| Qual 1 | Mari Tanaka - Miyazaki | 6-3 7-5 |
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| Kurume $50,000 Grass | May 20 2012 |
| 1 | Junri Namigata(6) - Miyazaki | 6-2 6-3 |
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| Karuizawa $25,000 Grass | May 27 2012 |
| Qual 1 | Miyazaki(5) - Hitomi Ozaki | 6-2 6-2 |
| Qual 2 | Miyazaki(5) - Shu-Ying Hsieh(13) | 6-3 6-2 |
| 1 | Miharu Imanishi - Miyazaki | 6-2 3-6 6-2 |
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| Tokyo $10,000 Hard | Jun 17 2012 |
| 1 | Miyazaki - Hiroko Kuwata | 3-6 6-4 6-4 |
| 2 | Miyazaki - Kumiko Iijima(7) | 6-4 6-0 |
| QF | Akiko Yonemura(3) - Miyazaki | 6-2 6-1 |
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| Mie $10,000 Grass | Jun 24 2012 |
| 1 | Kaori Onishi - Miyazaki(7) | 6-3 3-6 6-1 |
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| Pattaya $10,000 Hard | Jul 1 2012 |
| 1 | Miyazaki(7) - Ya Zhou | 6-1 6-4 |
| 2 | Nives Baric - Miyazaki(7) | 7-63 3-6 6-1 |
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| Pattaya $10,000 Hard | Jul 8 2012 |
| 1 | Luksika Kumkhum(1) - Miyazaki | 6-4 6-0 |
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| Pattaya $10,000 Hard | Jul 15 2012 |
| 1 | Miyazaki - Eri Hozumi | 6-4 6-3 |
| 2 | Lin Zhu(8) - Miyazaki | 6-1 6-3 |
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| Tsukuba $25,000 Hard | Sep 2 2012 |
| Qual 1 | Miyazaki - Chinami Ogi(7) | 6-2 6-4 |
| Qual 2 | Chihiro Nunome - Miyazaki | 7-63 6-4 |
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| Noto $25,000 Grass | Sep 9 2012 |
| Qual 1 | Miyazaki(8) | bye |
| Qual 2 | Miyazaki(8) - Nanami Masuoka | 6-3 6-1 |
| Qual 3 | Nao Hibino(13) - Miyazaki(8) | 4-6 7-5 6-2 |
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| Gulbarga $10,000 Hard | Sep 30 2012 |
| 1 | Nan-Nan Zhang - Miyazaki(7) | 7-65 6-3 |
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| Bidar $10,000 Hard | Oct 7 2012 |
| 1 | Miyazaki(6) - Natasha Palha | 6-0 6-3 |
| 2 | Miyazaki(6) - Ho Ching Wu | 6-0 4-6 6-2 |
| QF | Miyazaki(6) - Nungnadda Wannasuk(2) | 6-2 7-5 |
| SF | Miyazaki(6) - Prarthana Thombare | 6-4 6-2 |
| F | Venise Chan(1) - Miyazaki(6) | 6-2 6-3 |
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| Makinohara $25,000 Grass | Oct 21 2012 |
| Qual 1 | Miyazaki(11) - Hirono Watanabe | 6-4 6-1 |
| Qual 2 | Miyazaki(11) - Yuuki Tanaka(6) | 7-68 4-6 6-2 |
| 1 | Kumiko Iijima - Miyazaki | 3-6 7-67 6-3 |
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| Seoul $25,000 Hard | Oct 28 2012 |
| 1 | Miyazaki - Napatsakorn Sankaew | 4-6 6-1 6-2 |
| 2 | Na-Ri Kim - Miyazaki | 1-6 6-3 6-3 |
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| Jakarta $10,000 Hard | Dec 2 2012 |
| 1 | Miyazaki(6) - Michika Ozeki | 3-6 7-5 6-4 |
| 2 | Miyazaki(6) - Ya-Hsuan Lee | 6-3 6-3 |
| QF | Ching-Wen Hsu - Miyazaki(6) | 6-0 7-5 |
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| Jakarta $10,000 Hard | Dec 9 2012 |
| 1 | Miyazaki(5) - Rifanty Kahfiani | 6-2 6-1 |
| 2 | Miyazaki(5) - Yuenu Li | 3-6 6-1 6-2 |
| QF | Jia-Jing Lu(1) - Miyazaki(5) | 6-0 6-1 |