MELBOURNE, Australia — Novak Djokovic and Roger Federer are 22-all in career head-to-heads, have nine Australian Open titles between them, and warmed up for a semifinal meeting with clinical quarterfinal wins.
Six-time champion Serena Williams advanced to the semifinals yet again, extending her dominance in a 12-year rivalry with an 18th straight win over Maria Sharapova.
The three most decorated players from Melbourne in the Open era all won in straight sets Tuesday, with Williams starting the roll with a 6-4, 6-1 win over 2008 champion Sharapova in a rematch of last year's final. Up next for her is fourth-seeded Agnieszka Radwanska, who beat No.