Serena Williams Wins the U.S. Open On this day, in 2014 Serena Williams beat Caroline Wozniacki (6-3, 6-3) in the finals of the 134th edition of the US Open, it was the fourth and final Grand Slam event of the year. September 8, 2014 Sport: Tennis Trivia What Are the Five Events That Make Up the Modern Olympic Pentathon? Which Nations Won the Gold, Silver and Bronze Medals the Last Time Baseball Was an Olympic Sport? sports in this article Tennis tags in this article Fan On This Day SportsEngine