Maria into US Open last 16

Maria defeated Mallory Burdette of the United States 6-1 6-1 to advance to the fourth round of the US Open.

This is Maria’s ninth appearance in the fourth round at Grand Slams in the last ten dating back to Wimbledon 2010.

Maria broke Burdette’s serve in the first game as Maria’s pace of shot was troubling Burdette. Maria then took five of the next six games and won the set when a forehand hit the net cord which Burdette had no chance of retrieving.

Maria got an early break in the second set to lead 2-0 with a forehand winner. At 5-1, Maria hit a winning serve and followed it with a 107mph ace. Another huge serve brought her three match points and Maria converted the first with an easy put away.

In the fourth round to be played on Sunday, Maria will play No.19 seed Nadia Petrova of Russia. Maria has played the 30-year-old nine times before and leads the series 8-1, here are the matches they have played against each other:
2003 Los Angeles R2: Maria won 6-2 2-6 7-5
2005 Wimbledon QF: Maria won 7-6 6-3
2005 US Open QF: Maria won 7-5 4-6 6-4
2005 WTA Tour Championships RR: Petrova 6-1 6-2
2006 Australian Open QF: Maria won 7-6 6-4
2006 Linz Final: Maria won 7-5 6-2
2009 Roland Garros R2: Maria won 6-2 1-6 8-6
2009 Stanford R2: Maria won 6-1 6-2
2009 Toronto R1: Maria won 6-3 6-4