his match with Andy Roddick due to a leg injury. He was able to play at Roland Garros and convincingly advanced to the quarterfinals. He dropped a set apiece to Diego Junqueira and Stanislas Wawrinka and beat eighth seed Fernando Verdasco, 6–2, 6–2, 6–4 en route. He fell to eventual runner-up Robin Söderling (who had just upset Rafael Nadal in the fourth round), 1–6, 3–6, 1–6. On grass, Davydenko advanced to the third round at Wimbledon, before falling to Tomáš Berdych, 2–6, 3–6, 2–6, for the first time. After Wimbledon, he competed in the 2009 MercedesCup as second seed, falling to Fabio Fognini in the quarterfinals. He then won two straight titles: the 2009 International German Open, defeating Paul-Henri Mathieu, 6–4, 6–2, and the 2009 ATP Studena Croatia Open Umag, defeating Juan Carlos Ferrero, 6–3, 6–0, dropping only one set in 10 matches. Davydenko then lost to Andy Murray in the quarterfinals of the Rogers Cup in Montreal, 2–6, 4–6, a loss which snapped a 12-match winning streak. He then lost in the third round of the 2009 Cincinnati Masters to Gilles Simon, 7–6, 4–6, 4–6. Davydenko lost in the quarterfinals of the 2009 Pilot Pen Tennis to Sam Querrey. At the US Open, he reached the fourth round, before retiring against Robin Söderling with a left thigh injury. He won his third title of the year at the 2009 Malaysian Open by beating Gaël Monfils, 6–3, 6–3, in the quarterfinals, Robin Söderling, 1–6, 7–6, 6–2, in the semifinals, and Fernando Verdasco, 6–4, 7–5, in the final. Following his triumph in Malaysia, he competed in the 2009 China Open, losing in the quarterfinals to eventual runner-up Marin Čilić, 4–6, 4–6. At the Shanghai Masters 1000 event, he defeated three seeded players en route to the final, tenth seed Fernando González, thirteenth seed Radek Štěpánek, and second seed Novak Djokovic. He upset Djokovic in the semifinals, 4–6, 6–4, 7–6. In the final, he played Rafael Nadal and again won in an upset, 7–6, 6–3. At the ATP World Tour Finals in London, Davydenko won four of his five matches. He lost his first round-robin match to Novak Djokovic, 6–3, 4–6, 5–7, but he beat Nadal in his second match, 6–1, 7–6. He also went on to beat the odds, defeating his group leader, Robin Söderling, 7–6, 4–6, 6–3 to reach the semifinals. He recorded his first win over Roger Federer in