Challengers by country
France
34
Germany
32
Sweden
21
Turkey
17
Spain
16
Poland
14
Denmark
13
Netherlands
12
Czech Republic
7
Finland
6
United Kingdom
6
Greece
6
Portugal
5
Austria
5
South Korea
5
Norway
4
Russia
4
Bulgaria
4
China
4
Italy
3
Romania
2
Hungary
2
Estonia
2
Israel
2
Serbia
2
Slovakia
2
Belgium
2
Switzerland
2
Lebanon
1
Croatia
1
Hong Kong
1
Belarus
1
Lithuania
1
Latvia
1
Macedonia
1
Iran
1
Montenegro
1
Australia
1
Albania
1
Tunisia
1