Kevin Durant scored 21 points and reserve James Harden added 16 to lead the Oklahoma City Thunder to a 106-92 victory over the defending champion Dallas Mavericks Sunday night in the preseason opener for both teams. Durant, the NBA scoring leader last season at 27.7 points a game, went 13 for 14 from the free throw line. Lamar Odom, acquired from the Los Angeles Lakers in a trade on Dec. 11, had 14 points and seven rebounds in his Mavericks debut. Dirk Nowitzki and Jason Kidd, leaders of the Mavericks title run, were in uniform and are healthy but were rested. Delonte West and Odom started in their place. Dominique Jones and Roddy Beaubois had 17 points each to pace Dallas. The Mavs are working newcomers Odom, Vince Carter and West into their rotation, looking to make up for the losses of key rotation members Tyson Chandler, J.J. Barea and Caron Butler to trades or free agency. Heat top Magic: LeBron James scored 19 points and the Miami Heat got their preseason off to an easy start, running away to beat the Orlando Magic 118-85. Terrel Harris scored 16, while Dwyane Wade and Chris Bosh each had 14 for Miami. The Heat led 53-46 at halftime before turning it into a rout. Ryan Anderson and J.J. Redick each scored 22 for Orlando, which lost for the first time in 22 preseason games dating to October 2008. The subject of trade talk throughout training camp, Dwight Howard finished with only five points on 2-for-9 shooting. Magic point guard Jameer Nelson missed all 10 of his shots and forward Hedo Turkoglu left late in the first half with a bruised left hip. Celtics down Raptors: Greg Stiemsma tipped in the game-winning shot with 12 seconds left and the Boston Celtics held off the Toronto Raptors 76-75 in the preseason opener for both teams. Ray Allen scored 12 points for the Celtics, while Kevin Garnett had nine points and seven rebounds. Marquis Daniels had 11 points for Boston.