Name: Ai Koga
Country: Japan
Birthdate: 03.10.91, 33 years
WTA ranking: 843
TOP ranking's position: 782 (03.12.12, 2100 points)
Points: 17
Matches total: 91
Win: 43
%: 47.25 %
Country: Japan
Birthdate: 03.10.91, 33 years
WTA ranking: 843
TOP ranking's position: 782 (03.12.12, 2100 points)
Points: 17
Matches total: 91
Win: 43
%: 47.25 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2012 | 21/16 | 15/11 | 0/0 | 1/1 | 1/1 | 4/3 | 0/0 |
| 2011 | 15/19 | 10/12 | 0/0 | 0/0 | 4/6 | 1/1 | 0/0 |
| 2010 | 3/6 | 0/2 | 0/0 | 2/1 | 1/3 | 0/0 | 0/0 |
| 2009 | 0/4 | 0/2 | 0/0 | 0/0 | 0/2 | 0/0 | 0/0 |
| 2008 | 4/3 | 2/1 | 0/0 | 0/0 | 2/2 | 0/0 | 0/0 |
| TOTAL | 43/48 | 27/28 | 0/0 | 3/2 | 8/14 | 5/4 | 0/0 |
| perc. % | 47.25 % | 49.09 % | 0 % | 60 % | 36.36 % | 55.56 % | 0 % |
Ai Koga / scheduled / last
| no matches found |
Ai Koga form / surface: Carpet
Ai Koga / surface: Carpet
| 10.09.12 | 1st round | Ai Koga | Misa Kinoshita | 6-0, 4-6, 6-3 |  | match details |  Kyoto | Carpet |
| 10.09.12 | 2nd round | Risa Hasegawa | Ai Koga | 3-6, 6-3, 7-64 |  | match details | ||
| 21.11.11 | q 1 | Remi Tezuka | Ai Koga | 6-3, 7-63 | | match details | Toyota | Carpet |
| 24.10.11 | q 1 | Sakiko Shimizu | Ai Koga | 6-0, 6-2 | | match details | Hamanako | Carpet |
| 17.10.11 | q 1 | Ai Koga | Reiko Suzuki | 6-0, 6-0 | | match details | Makinohara | Carpet |
| 17.10.11 | qual. | Emi Mutaguchi | Ai Koga | 3-6, 7-5, 7-68 | | match details | ||
| 30.05.11 | 1st round | Yumi Nakano | Ai Koga | 6-4, 6-1 | | match details | Mie | Carpet |
| 16.05.11 | 1st round | Kanae Hisami | Ai Koga | 6-4, 6-2 | | match details | Karuizawa | Carpet |
| 16.05.11 | q 1 | Ai Koga | Misaki Mori | 6-2, 6-0 | | match details | ||
| 16.05.11 | qual. | Ai Koga | Yumi Miyazaki | 6-2, 6-2 | | match details | ||
| 14.03.11 | qual. | Ai Koga | Saya Nishi | 6-0, 6-1 | | match details | Miyazaki | Carpet |
| 14.03.11 | 1st round | Miharu Imanishi | Ai Koga | 6-1, 6-0 | | match details | ||
| 15.11.10 | 1st round | Misa Eguchi | Ai Koga | 6-4, 6-1 | | match details | Hyogo | Carpet |
| 20.09.10 | 1st round | Kumiko Iijima | Ai Koga | 6-0, 6-4 | | match details | Makinohara | Carpet |
| 02.08.10 | 2nd round | Aki Yamasoto | Ai Koga | 6-0, 6-74, 6-4 | | match details | Niigata | Carpet |
| 02.08.10 | 1st round | Ai Koga | Sayaka Umeda | 6-4, 6-3 | | match details | ||
| 16.11.09 | 1st round | Makiho Kozawa | Ai Koga | 6-4, 6-3 | | match details | Hyogo | Carpet |
| 14.09.09 | 1st round | Nungnadda Wannasuk | Ai Koga | 6-1, 6-1 | | match details | Kyoto | Carpet |
| 15.09.08 | 1st round | Maki Arai | Ai Koga | 6-1, 6-1 | | match details | Kyoto | Carpet |
| 08.09.08 | 1st round | Ai Koga | Ling Zhang | 7-66, 6-3 | | match details | Noto | Carpet |
| 08.09.08 | 2nd round | Ai Koga | I-Hsuan Hwang | 6-4, 6-4 | | match details | ||
| 08.09.08 | 1/4 | Jade Curtis | Ai Koga | 6-3, 6-3 | | match details |
