Okamoto - Sema
31.10.2006, Sutama ITF, 1. round, clay
| Okamoto Seiko | 2 : 0 (6-2, 6-4) | Sema Erika | ||
|---|---|---|---|---|
|  | -. | Singles ranking | 589. |  | 
| 14. 3. 1978 | Birthdate | 24. 11. 1988 | ||
| - | Height | - | ||
| - | Weight | - | ||
| right | Plays | right | ||
| - | Turned pro | - | ||
| Surface | Okamoto Seiko | Sema Erika | 
|---|---|---|
| Indoors | - | 5/2 | 
| Clay | - | - | 
| Grass | - | - | 
| Hard | - | 22/19 | 
| Not set | - | - | 
| Year | Summary | Clay | Hard | Indoors | Grass | Not set | 
|---|---|---|---|---|---|---|
| Summary: | 208/204 | 12/12 | 121/131 | 59/42 | 16/19 | - | 
| 2010 | 7/8 | - | 2/4 | 3/2 | 2/2 | - | 
| 2009 | 16/17 | - | 9/9 | 5/5 | 2/3 | - | 
| 2008 | 11/25 | - | 5/17 | 6/7 | 0/1 | - | 
| 2007 | 25/23 | - | 13/15 | 12/6 | 0/2 | - | 
| 2006 | 36/26 | 4/5 | 17/13 | 10/4 | 5/4 | - | 
| 2005 | 28/24 | - | 15/17 | 9/5 | 4/2 | - | 
| 2004 | 29/29 | 1/1 | 25/21 | 3/6 | 0/1 | - | 
| 2003 | 24/23 | 0/1 | 15/15 | 7/5 | 2/2 | - | 
| 2002 | 32/24 | 7/5 | 20/15 | 4/2 | 1/2 | - | 
| 2000 | 0/3 | - | 0/3 | - | - | - | 
| 1999 | 0/1 | - | 0/1 | - | - | - | 
| 1998 | 0/1 | - | 0/1 | - | - | - | 
| Year | Summary | Clay | Hard | Indoors | Grass | Not set | 
|---|---|---|---|---|---|---|
| Summary: | 565/483 | 52/53 | 433/350 | 46/47 | 34/33 | - | 
| 2025 | 26/21 | - | 21/19 | 5/2 | - | - | 
| 2024 | 30/26 | 4/4 | 26/22 | - | - | - | 
| 2023 | 37/28 | 2/2 | 34/23 | 0/1 | 1/2 | - | 
| 2022 | 32/25 | 4/2 | 28/20 | 0/3 | - | - | 
| 2021 | 31/23 | 13/7 | 18/16 | - | - | - | 
| 2020 | 6/4 | - | 6/4 | - | - | - | 
| 2019 | 24/28 | 1/1 | 21/25 | 2/2 | - | - | 
| 2018 | 19/27 | 0/1 | 19/26 | - | - | - | 
| 2017 | 40/30 | - | 39/29 | 1/1 | - | - | 
| 2016 | 22/28 | 1/2 | 19/22 | 1/1 | 1/3 | - | 
| 2015 | 30/26 | 1/2 | 27/21 | 0/1 | 2/2 | - | 
| 2014 | 17/25 | 1/3 | 13/14 | 1/3 | 2/5 | - | 
| 2013 | 30/24 | 2/2 | 25/19 | - | 3/3 | - | 
| 2012 | 23/31 | 2/6 | 15/18 | 4/4 | 2/3 | - | 
| 2011 | 43/28 | 6/8 | 28/15 | 4/2 | 5/3 | - | 
| 2010 | 37/22 | 3/6 | 27/11 | 4/2 | 3/3 | - | 
| 2009 | 47/26 | 6/3 | 29/14 | 10/8 | 2/1 | - | 
| 2008 | 7/13 | 0/1 | 3/8 | 2/3 | 2/1 | - | 
| 2007 | 39/20 | - | 26/13 | 6/4 | 7/3 | - | 
| 2006 | 13/15 | 2/1 | 5/6 | 5/5 | 1/3 | - | 
| 2005 | 8/8 | 4/1 | 1/4 | 0/2 | 3/1 | - | 
| 2004 | 4/4 | - | 3/1 | 1/3 | - | - | 
| 2003 | 0/1 | 0/1 | - | - | - | - | 
Head-to-head: 3 - 0
| Year | Tournament | Match | S | Surface | 1 | 2 | 3 | 4 | 5 | Round | 
|---|---|---|---|---|---|---|---|---|---|---|
| 2009 | Noto ITF | Okamoto | 2 | 6 | 6 | 1R | ||||
| Sema | 0 | 3 | 1 | |||||||
| 2006 | Sutama ITF | Okamoto | 2 | 6 | 6 | 1R | ||||
| Sema | 0 | 2 | 4 | |||||||
| 2006 | Miyazaki ITF | Okamoto | 2 | 6 | 7 | 1R | ||||
| Sema | 0 | 1 | 63 | 
Betting odds
Latest matches
- Okamoto
| Kusatsu ITF, 1R, 25.05.2010 | ||
| Oka - Okamoto | 2:1 | |
| Kusatsu ITF, Q-R16, 24.05.2010 | ||
| Okamoto - Ogi | 2:0 | |
| Kusatsu ITF, Q-2R, 23.05.2010 | ||
| Okamoto - Hasegawa | 2:0 | |
| Karuizawa ITF, R16, 19.05.2010 | ||
| Lee - Okamoto | 2:0 | |
| Karuizawa ITF, 1R, 18.05.2010 | ||
| Okamoto - Yamasoto | 2:0 | |
| Kurume ITF, Q-QF, 10.05.2010 | ||
| Wang - Okamoto | 2:1 | |
| Kurume ITF, Q-R16, 09.05.2010 | ||
| Okamoto - Yamasoto | 2:0 | |
| Kurume ITF, Q-1R, 08.05.2010 | ||
| Okamoto - Harkins | 2:1 | |
| Fukuoka ITF, Q-1R, 01.05.2010 | ||
| Omae - Okamoto | 2:0 | |
| Changwon ITF, Q-1R, 17.04.2010 | ||
| Pliskova - Okamoto | 2:1 | |
- Sema
| Brisbane 4 ITF, QF, 31.10.2025 | ||
| Sema - Micic | 1:0 | |
| Brisbane 4 ITF, R16, 30.10.2025 | ||
| Sema - Cooper | 2:0 | |
| Brisbane 4 ITF, 1R, 29.10.2025 | ||
| Sema - Black | 2:0 | |
| Brisbane ITF, 1R, 22.10.2025 | ||
| Yang - Sema | 2:0 | |
| Wagga Wagga 2 ITF, SF, 20.09.2025 | ||
| Swan - Sema | 2:0 | |
| Wagga Wagga 2 ITF, QF, 19.09.2025 | ||
| Sema - Korhonen | 2:0 | |
| Wagga Wagga 2 ITF, R16, 18.09.2025 | ||
| Sema - Miyamoto | 2:0 | |
| Wagga Wagga 2 ITF, 1R, 16.09.2025 | ||
| Sema - Guillen | 2:0 | |
| Wagga Wagga ITF, QF, 12.09.2025 | ||
| Cabrera - Sema | 2:1 | |
| Wagga Wagga ITF, R16, 11.09.2025 | ||
| Sema - Yang | 2:0 | |
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