5. Belgium
Kim Clijsters is the former number one in women’s singles and doubles. Justine Henin is one of the few who uses an on-hand backhand. They’re both from Belgium.

Neale Cousland/Shutterstock.com
Kim Clijsters is the former number one in women’s singles and doubles. Justine Henin is one of the few who uses an on-hand backhand. They’re both from Belgium.
Neale Cousland/Shutterstock.com