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By surface
| Surface | Ari Alkio | Don In Cho |
| Hard |
4 |
1 |
| Clay |
2 |
0 |
All meetings (7)
| Date | Tour | Tournament | Round | Surface | Winner |
Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
| 2014-08-25 |
WTA |
US Open |
Semifinal |
Hard |
Caroline Wozniacki |
6-71 |
3-4 |
|
|
|
| 2013-08-19 |
WTA |
New Haven |
Round of 32 |
Hard |
Caroline Wozniacki |
6-2 |
1-3 |
|
|
|
| 2013-08-12 |
WTA |
Cincinnati |
Round of 64 |
Hard |
Caroline Wozniacki |
1-6 |
1-6 |
|
|
|
| 2011-05-16 |
WTA |
Brussels |
Final |
Clay |
Caroline Wozniacki |
6-2 |
3-6 |
3-6 |
|
|
| 2009-04-13 |
WTA |
Charleston |
Round of 16 |
Clay |
Caroline Wozniacki |
3-6 |
4-6 |
|
|
|
| 2008-10-20 |
WTA |
Luxembourg |
Round of 16 |
Hard |
Caroline Wozniacki |
4-6 |
4-6 |
|
|
|
| 2007-08-13 |
WTA |
Toronto |
Round of 64 |
Hard |
Shuai Peng |
0-6 |
7-64 |
2-6 |
|
|