Name: Keita Koyama
Country: Japan
Birthdate: 06.08.86, 38 years
ATP ranking: 896
TOP ranking's position: 896 (23.03.15, 16 points)
Points: 16
Matches total: 78
Win: 34
%: 43.59 %
Country: Japan
Birthdate: 06.08.86, 38 years
ATP ranking: 896
TOP ranking's position: 896 (23.03.15, 16 points)
Points: 16
Matches total: 78
Win: 34
%: 43.59 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2015 | 3/8 | 3/5 | 0/1 | 0/1 | 0/1 | 0/0 | 0/0 |
| 2014 | 13/13 | 8/9 | 4/2 | 0/0 | 1/2 | 0/0 | 0/0 |
| 2013 | 11/10 | 9/7 | 2/2 | 0/0 | 0/1 | 0/0 | 0/0 |
| 2012 | 5/7 | 3/5 | 1/1 | 0/0 | 0/0 | 1/1 | 0/0 |
| 2011 | 2/3 | 0/1 | 0/1 | 0/0 | 0/0 | 2/1 | 0/0 |
| 2008 | 0/1 | 0/0 | 0/0 | 0/0 | 0/1 | 0/0 | 0/0 |
| 2007 | 0/1 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2006 | 0/1 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 34/44 | 23/29 | 7/7 | 0/1 | 1/5 | 3/2 | 0/0 |
| perc. % | 43.59 % | 44.23 % | 50 % | 0 % | 16.67 % | 60 % | 0 % |
Keita Koyama / Fixtures
| no matches found |
Keita Koyama form / year 2014 / surface: Hard
Keita Koyama / year 2014 / surface: Hard
| 07.11.14 | q 1 | Makoto Ochi | Keita Koyama | 7-65, 7-64 |  | match details |  Yokohama Challenger | Hard |
| 28.10.14 | qual. | Keita Koyama | Chuhan Wang | 5-7, 7-64, 6-4 |  | match details |  Traralgon Challenger | Hard |
| 28.10.14 | 1st round | Jake Eames | Keita Koyama | 6-2, 6-0 | | match details | ||
| 26.10.14 | q 2 | Keita Koyama | Adam Hubble | 3-6, 6-4, 7-5 | | match details | ||
| 25.10.14 | q 1 | Keita Koyama | Jeremy Beale | 6-2, 2-6, 7-62 | | match details | ||
| 15.09.14 | 1st round | Keita Koyama | Kittiphong Wachiramanowong | 6-1, 6-2 | | match details |  Turkey F32 | Hard |
| 15.09.14 | 2nd round | Hiroyasu Ehara | Keita Koyama | 6-0, 6-1 | | match details | ||
| 08.09.14 | 1/4 | Nikala Scholtz | Keita Koyama | 7-66, 6-3 | | match details | Turkey F31 | Hard |
| 08.09.14 | 1st round | Keita Koyama | Michal Konecny | 7-68, 4-2, Michal Konecny - retired | | match details | ||
| 08.09.14 | 2nd round | Keita Koyama | Shonigmatjon Shofayziyev | 6-2, 6-2 | | match details | ||
| 09.06.14 | 1st round | Keita Koyama | Masayoshi Ono | 7-5, 6-3 | | match details | Japan F6 | Hard |
| 09.06.14 | 2nd round | Takashi Saito | Keita Koyama | 6-3, 6-1 | | match details | ||
| 31.03.14 | 1st round | Yusuke Watanuki | Keita Koyama | 6-2, 6-4 | | match details | Japan F4 | Hard |
| 24.03.14 | 2nd round | Yusuke Watanuki | Keita Koyama | 6-0, 4-6, 6-1 | | match details | Japan F3 | Hard |
| 24.03.14 | 1st round | Keita Koyama | Arata Onozawa | 6-3, 6-4 | | match details | ||
| 17.03.14 | q 1 | Itsuki Imina | Keita Koyama | 6-4, 6-1 | | match details | Japan F2 | Hard |
| 10.03.14 | q 1 | Kazuya Takayama | Keita Koyama | 6-72, 7-65, 7-5 | | match details | Japan F1 | Hard |
