About Stefan Koubek
Stefan Koubek (born 2 January 1977) is a retired tennis player from Austria. Koubek played left-handed with a double-handed backhand. His idol when growing up was Thomas Muster. Koubek won three titles, two of which came on hardcourts; despite this, he said his favorite surface was clay. Koubek reached the quarterfinals of the 2002 Australian Open and the 2002 Hamburg Masters, attaining a career-high singles ranking of World No. 20 in March 2000. Koubek tested positive for glucocorticosteroids at the 2004 French Open after receiving an injection for an injured wrist; he was subsequently suspended for three months. His nickname is Cooley or Stef. Koubek had his first experience on the tennis court as a 2.5-year-old, where his parents were playing as a hobby. Koubek won his first smaller tournament at the age of nine and later won the national vice championship title in the U10 class. Koubek became a national indoors champion in the U16 class, gaining an entry into the Austrian Tennis Association.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.