Simplify the following text for a Grade 7 native English-speaking person.
Original: Justine Henin ( born 1 June 1982 ) , formerly known as Justine Henin-Hardenne ( 2002 â `` 2007 ) , is a former professional Belgian tennis player and former World No. 1 .
Simplified: Justine Henin ( born June 1 , 1982 ) is a Belgian professional tennis player and a World Number 1 .