The Former US Open champion Stan Wawrinka became the oldest man to win a match at the tournament since 40-year-old Jimmy Connors in 1992.
The 50th anniversary of the U.S. Open becomes the first sporting event to offer equal prize money to female and male competitors celebrated recently.
The 79-year-old tennis player Billie Jean King, as the defending U.S. Open champion in 1973 rallied her fellow women players to threaten a boycott of that year's tournament unless women got the same pay as men.
It was announced that summer that the men's and women's U.S. Open champions would each receive $25,000.
It would take 34 years before all the other Grand Slam events followed suit.
This year the U.S. Open winners will each receive $3 million.