In December, the USTA said it would move the 2013 women's singles final to Sunday and the men's final to Monday, building in a day of rest ahead of each title match and moving from a 14-day tournament to 15 days.

WSJ: US Open tennis prize money to reach $50M by 2017

In December, the USTA said it would move the women's singles final to Sunday and the men's final to Monday in 2013, building in a day of rest ahead of each title match and moving from a 14-day tournament to 15 days.

NPR: APNewsBreak: US Open Tennis Prizes To $50M By '17

Home favorite Wozniacki had gone into the title match with a 14-0 winning streak at the hard court tournament and victories in the 2010 and 2011 editions.

CNN: Wozniacki suffers shock defeat in Copenhagen final

In December, the USTA said it would move the women's singles final to Sunday and the men's final to Monday in 2013, building in a day of rest ahead of each title match for the first time and moving from a 14-day tournament to 15 days.

WSJ: U.S. Open Tennis To Boost Prize Purse To $50M By 2017

The Argentine did not drop his service throughout the three-set match to deny the Swiss maestro a sixth title at the hard court tournament.

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