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 / year 2012 / surface: Hard
Ai Koga / year 2012 / surface: Hard
| 22.10.12 | 1st round | Ho Ching Wu | Ai Koga | 6-4, 1-6, 6-1 |  | match details | .png){kind=small} Taipei | Hard |
| 03.09.12 | 1st round | Ai Koga | Ai Wen Zhu | 6-3, 6-3 |  | match details |  Yeong Wol | Hard |
| 03.09.12 | 2nd round | Nungnadda Wannasuk | Ai Koga | 3-6, 6-3, 6-3 | | match details | ||
| 27.08.12 | 1st round | Sun-Jung Kim | Ai Koga | 6-2, 6-1 | | match details | Yeong Wol | Hard |
| 30.07.12 | 1st round | Macall Harkins | Ai Koga | 6-3, 6-4 | | match details |  Fort Worth | Hard |
| 23.07.12 | 2nd round | Federica Grazioso | Ai Koga | 3-6, 6-0, 6-2 | | match details | New Orleans | Hard |
| 23.07.12 | 1st round | Ai Koga | Yumi Nakano | 6-4, 6-4 | | match details | ||
| 07.05.12 | 1/4 | Sharrmadaa Baluu | Ai Koga | 6-4, 7-5 | | match details |  New Delhi | Hard |
| 07.05.12 | 1st round | Ai Koga | Zainab Ali Sajjad | 6-0, 6-4 | | match details | ||
| 07.05.12 | 2nd round | Ai Koga | Shreya Pasricha | 6-2, 6-2 | | match details | ||
| 16.04.12 | qual. | Indy De Vroome | Ai Koga | 6-4, 6-2 | | match details |  Antalya Belconti | Hard |
| 16.04.12 | q 2 | Ai Koga | Janna Hildebrand | 6-3, 6-0 | | match details | ||
| 09.04.12 | qual. | Paulina Milosavljevic | Ai Koga | 6-2, 6-3 | | match details | Antalya Belconti | Hard |
| 09.04.12 | q 2 | Ai Koga | Wan-Yi Sweeting | 6-3, 6-3 | | match details | ||
| 26.03.12 | q 2 | Chihiro Matsumoto | Ai Koga | Ai Koga - walk over | | match details |  Nishi Tama | Hard |
| 26.03.12 | q 1 | Ai Koga | Chinami Yamashita | 6-3, 6-0 | | match details | ||
| 13.02.12 | 2nd round | Ai Koga | Pilar Dominguez-Lopez | 6-4, 6-3 | | match details |  Portimao | Hard |
| 13.02.12 | q 2 | Ai Koga | Maria Canero Perez | 6-2, 6-4 | | match details | ||
| 13.02.12 | qual. | Ai Koga | Alexandra Starkova | 6-3, 6-1 | | match details | ||
| 13.02.12 | 1st round | Ai Koga | Patrycja Sanduska | 6-2, 1-6, 6-3 | | match details | ||
| 13.02.12 | 1/4 | Nuria Parrizas-Diaz | Ai Koga | 7-5, 4-2, Ai Koga - retired | | match details | ||
| 06.02.12 | qual. | Ai Koga | Laura Deigman | 6-0, 6-1 | | match details | Vale Do | Hard |
| 06.02.12 | 1st round | Ai Koga | Ekaterina Tour | 6-2, 3-6, 6-4 | | match details | ||
| 06.02.12 | 1/4 | Teresa Malikova | Ai Koga | 6-0, 6-0 | | match details | ||
| 06.02.12 | 2nd round | Ai Koga | Nuria Parrizas-Diaz | 6-3, 6-0 | | match details | ||
| 06.02.12 | q 2 | Ai Koga | Natalia Galan Gomez | 6-0, 6-0 | | match details |
