to Argentinian wildcard José Acasuso in straight sets. However, partnering Igor Andreev, Dolgopolov reached his first ATP tour doubles semifinal, but lost to eventual champions Oliver Marach and Leonardo Mayer. Dolgopolov then participated in the final leg of the Golden Triangle swing in the 2011 Abierto Mexicano Telcel tournament in Acapulco, as the sixth seed. He defeated Chilean Paul Capdeville in the first round, and then beat doubles partner Carlos Berlocq in the second round. He reached the semifinals after beating fourth seed Stanislas Wawrinka but lost to top seed and world no. 6 David Ferrer in three sets. Dolgopolov next entered the first Masters 1000 series of the year at Indian Wells, his debut in the tournament. As the 20th seed, he received a first-round bye, and then beat Romanian Victor Hănescu to reach the third round, where he faced Grand Slam champion Juan Martín del Potro. He lost the match in straight sets. Dolgopolov was also entered in the doubles tournament. Partnering Xavier Malisse, they defeated Tomáš Berdych and Janko Tipsarević and then shocked top seeds and world no. 1 Mike Bryan and Bob Bryan. They played Jamie Murray and Andy Murray next and defeated the British brothers after being a set down, a break down, and 1–6 down in the super tiebreak. Dolgopolov and Malisse then beat Rohan Bopanna and Aisam-ul-Haq Qureshi in the semifinals to enter Dolgopolov's first ATP tour doubles final. They played 2008 Beijing gold medalists Roger Federer and Stanislas Wawrinka, and they prevailed in a super tiebreak. Dolgopolov continued his form at the next Masters event, the 2011 Sony Ericsson Open in Miami, reaching the fourth round with wins against Italian Andreas Seppi and Jo-Wilfried Tsonga. He then lost to world no. 1 Rafael Nadal in straight sets. Dolgopolov then suffered a disappointing start to the clay season, suffering four consecutive first-round defeats. He was defeated in the first round of the 2011 Monte-Carlo Rolex Masters by Ernests Gulbis and then lost to Nikolay Davydenko in the 2011 Barcelona Open Banco Sabadell. He was then beaten by Santiago Giraldo in the 2011 Mutua Madrid Open and finally by Potito Starace at the 2011 Internazionali BNL d'Italia. It was later disclosed that he was suffering from pancreatitis since the North American swing, which led him to play sparingly during the early clay season. Dolgopolov managed to regain some of his earlier form in his