Both Roger Federer and Serena Williams were unsuccessful in defending their 2007 titles; Federer losing to Novak Djokovic in the semi-finals and Williams losing in the quarter-finals to Jelena Janković. Djokovic won his first Grand Slam singles title, defeating unseeded Jo-Wilfried Tsonga in the final; Maria Sharapova, runner-up to Williams in 2007, defeated Ana Ivanovic to win her first Australian Open title and third Grand Slam title.
