the Gerry Weber Open, losing to Philipp Kohlschreiber, and won the Aegon International, defeating Canadian Frank Dancevic in the final, his first grass court title. He then retired in his first-round match in Wimbledon against Mischa Zverev due to an ankle injury. He reached the quarterfinals Indianapolis Tennis Championships, losing to Frank Dancevic. He then lost four consecutive matches at the LA Tennis Open, the Legg Mason Tennis Classic, the Rogers Cup, and the US Open. 2010–2011 Dmitry missed most of the first part of 2010 due to the left ankle injury, and he had ankle surgery in February. He played his first tournament of the year at the French Open, falling to Daniel Gimeno-Traver in the first round. He then played on the Challenger tour. He fell in the first round in Wimbledon to Rainer Schüttler. He then fell in the second round of the qualifying draw in the Campbell's Hall of Fame Tennis Championships and the Farmers Classic. He won his first ATP match of the year at the Legg Mason Tennis Classic, defeating Teymuraz Gabashvili before falling to Tomáš Berdych. He again lost in the first round of the US Open to Jürgen Melzer in five sets. He then played in Bangkok, losing in the first round and quarterfinals of the Challenger events, and in the qualifying competition Thailand Open. At the Japan Open, Tursunov produced two upsets defeated world No. 25, Ernests Gulbis, and world No. 30, Richard Gasquet, before falling in the quarterfinals to the world No. 1 and eventual champion, Rafael Nadal. In Russia as a wild card, he fell in the first round of the Kremlin Cup and reached the semifinals of the St. Petersburg Open, losing to compatriot Mikhail Youzhny. He then retired in his first-round match at the Valencia Open 500 against Pablo Andújar due to a left calf injury. Tursunov began 2011 by losing in the qualifying draw of the Brisbane International to Peter Luczak and the first round of the Australian Open to Victor Troicki. He then competed in the Singapore ATP Challenger as a wild card, which he won. In Rotterdam, Tursunov was able to qualify and beat Andrey Golubev in the first round, before losing to fourth seed Tomáš Berdych. At the Open 13, he defeated Grigor Dimitrov in three tight sets. He then defeated Ivan Ljubičić and then-world No. 10 Jürgen Melzer, his first victory over