The 2005 Australian Open Tennis Championship titles for men’s and women’s singles were won, respectively by

The correct answer is: C. Marat Safin and Serena Williams.

Marat Safin won the 2005 Australian Open men’s singles title, defeating Lleyton Hewitt in the final. Serena Williams won the 2005 Australian Open women’s singles title, defeating Lindsay Davenport in the final.

Pete Sampras and Steffi Graf both retired from professional tennis in 2002. Rafael Nadal and Venus Williams were both competing in the 2005 Australian Open, but they were eliminated in the quarterfinals and semifinals, respectively. Andre Agassi and Arantxa Sanchez-Vicario were both retired from professional tennis by 2005.