It was a banner year for American women in 2013. The U.S. boasted the most women in the main draws at Roland Garros, Wimbledon and the US Open. At Roland Garros, Serena Williams, Bethanie Mattek-Sands, Sloane Stephens and Jamie Hampton all made the round of 16, the most American women in the fourth round of a Slam since the 2004 US Open. Hampton was seeded at the US Open for the first time and cracked the Top 25, 18-year-old Madison Keys reached a career-high No. 37, and runs to the Birmingham semifinals and the fourth round of the US Open propelled Alison Riske to her career-high at No. 56. In all, 11 American women finished the year in the Top 100, the most of any country.