Challengers by country
Germany
33
France
32
Türkiye
28
Poland
28
Spain
17
Sweden
15
Greece
9
Romania
7
Czech Republic
7
Bulgaria
7
Denmark
6
Portugal
5
Serbia
5
Egypt
5
Netherlands
5
Austria
5
Switzerland
4
Russia
4
Lithuania
3
Estonia
3
Algeria
3
United Kingdom
3
China
3
Belgium
3
Norway
2
Italy
2
South Korea
2
North Macedonia
1
Hungary
1
United States
1
Ireland
1
Finland
1
Albania
1
Malta
1
Tunisia
1
Jordan
1
Philippines
1