the West Classic in Stanford by Olga Govortsova. She accepted a last-minute wildcard into the Southern California Open in Carlsbad where she opened with a win over Varvara Lepchenko. She then made her way through to the final defeating Sesil Karatantcheva in the second round, causing an upset to defeat Agnieszka Radwańska in the quarterfinals and recovering from 0–4 in the first set to defeat Virginie Razzano in the semifinals. Stosur went on to play Victoria Azarenka in the final. She previously had an 0–8 record against Azarenka. Stosur stunned Azarenka by cruising past her in straight sets. This was Stosur's first WTA title since her win at the US Open. At the US Open, the 11th-seeded Stosur was stunned by the 296th-ranked American qualifier Victoria Duval in the first round going down in three sets. The loss meant, Stosur would drop out of the top 15 in the world rankings, and also meant that in 2013 she failed to reach the fourth round in any Grand Slam tournament. Stosur bounced back from the US Open disappointment and opened her campaign at the Pan Pacific Open with a come from behind victory over Alizé Cornet in three sets. She then defeated 42-year-old home favourite Kimiko Date-Krumm. Stosur lost in the third round to Lucie Šafářová. Stosur moved onto the China Open in Beijing where she again had to face Šafářová. This time was in the first round and Stosur suffered a similar result going down in straight sets. Stosur played her final tournament in Asia at the Japan Open in Osaka. As the third seed she opened the tournament with a win over Johanna Larsson and then defeated current junior world number one Belinda Bencic. After racing through the first set, Stosur overcame the loss of the second set to defeat Misaki Doi in the quarterfinals. Stosur swept past Madison Keys and into the final after a powerful performance in which she held all of her service games and gave Keys barely a chance of progressing in her first WTA semifinal, winning in just over an hour. Stosur moved on to play Eugenie Bouchard in the final, taking 2 hours and 13 minutes to capture her fifth career title, coming from a set down to win. This was the second time she had won in Osaka. She then reached the final of the Kremlin Cup after defeating Ana Ivanovic in