Prior to the start of the 2010-11 season, Durant announced via Twitter that he had signed a five-year contract extension with the Thunder worth approximately $86 million. For the second consecutive year, he led the NBA in scoring, averaging 27.7 points a game. Behind his leadership, the Thunder won 55 games and earned the fourth seed in the Western Conference. In the playoffs, Oklahoma City defeated the Denver Nuggets and Memphis Grizzlies en route to a Conference Finals match-up versus the Dallas Mavericks, losing in five games.  On February 19 of the lockout-shortened 2011-12 season, Durant recorded his first career 50-point game, scoring 51 points against the Denver Nuggets. At the All-Star Game, he scored 36 points and was awarded the NBA All-Star Game Most Valuable Player Award. He finished the year with a scoring average of 28 points per game, representing his third straight scoring title. Behind his play, the Thunder won 47 games and entered the playoffs as the Western Conference's second seed. In Game 1 of the first round against the Mavericks, Durant hit a game-winner with 1.5 seconds remaining. Oklahoma City would go on to defeat Dallas, the Lakers, and the San Antonio Spurs before losing to the Miami Heat in the Finals. For the NBA Finals, Durant led all players with 30.6 points per game, doing so on a 54.8 shooting rate.  With a scoring average of 28.1 points per game to finish the 2012-13 season, Durant failed to defend his scoring title; however, with a 51 percent shooting rate, a 41.6 percent three point shooting rate, and a 90.5 free throw shooting rate, he became the youngest player in NBA history to join the 50-40-90 club. Finishing the year with a 60-22 record, Oklahoma City earned the first seed in the Western Conference. In the first round of the playoffs against the Houston Rockets, Russell Westbrook tore his meniscus, forcing him to miss the remainder of the postseason. Without Westbrook, Durant was given more responsibility, averaging a career-high 30.8 points per game throughout the playoffs, but Oklahoma City were eventually eliminated in the second round by the Memphis Grizzlies in five games.

Answer this question "what were some of durants deep playoff runs?" by extracting the answer from the text above.
In the playoffs, Oklahoma City defeated the Denver Nuggets and Memphis Grizzlies en route to a Conference Finals match-up versus the Dallas Mavericks, losing in five games.