Serena Williams on Monday cruised into the quarterfinals of the US Open after securing a win over Maria Sakkari. Williams registered a 6-3, 6-7(6), 6-3 victory over No.15 seed to advance in the competition.

It took Williams two hours 29 minutes to secure a last-eight matchup against Tsvetana Pironkova, who overcame Alize Cornet, with the six-time winner extending her record to 105 wins to just 13 losses at major play at Flushing Meadows.