Simplify the following text for a Grade 6 native English-speaking person.
Original: Monica Seles ( Serbian : Ð Ð 3\/4 Ð 1\/2 Ð Ð Ð Ð Ð Ð '' Ð Ñ , Monika SeleÅ , , born December 2 , 1973 ) is a former World No. 1 professional tennis player and a member of the International Tennis Hall of Fame .
Simplified: Monica Seles ( , Serbian : Ð Ð 3\/4 Ð 1\/2 Ð Ð Ð Ð Ð Ð '' Ð Ñ , Monika SeleÅ , , born December 2 , 1973 ) is a former World No. 1 professional tennis player .