Serena Williams drops his fourth set at the 2014 French Open . But the Swiss rallies in a fourth -set tiebreak to advance . Serena Williams also rallies , against Garbine Muguruza . Stan Wawrinka and Novak Djokovic progress to the quarterfinals , too .
Stan Wawrinka drops his first set at the Australian Open . But the Swiss rallies in a fourth-set tiebreak to advance . Serena Williams also rallies , against Garbine Muguruza . Novak Djokovic and Dominika Cibulkova progress to the quarterfinals , too .