Kevin Durant and James Harden scored 22 points and the Oklahoma City Thunder completed the best regular-season month in franchise history with a 116-98 victory over the fading Phoenix Suns on Wednesday night.
Michael Westbrook added 16, Serge Ibaka 15 and Kendrick Perkins 13 as the Thunder won their fifth in a row, 11th in their last 12 and 50th of the season. Their 14-2 March was the best monthly record in franchise history. As the Seattle SuperSonics, they went 14-3 twice — in March of 1994 and November of 1996.
Vince Carter, now coming off the bench for Phoenix, scored 28 in the Suns' fourth straight loss. Three of Carter's top four scoring games for the Suns have come against Oklahoma City.
Referee Kenny Mauer threw out Suns reserves Aaron Brooks and Zabian Dowdell with 1:05 to play.
Oklahoma City outscored Phoenix 37-25 in the fourth quarter.
Phoenix trailed 55-51 at the half and never caught the Thunder after that.
The Suns cut it to one twice, the last time at 60-59 on Marcin Gortat's dunk. But Westbrook made a driving layup, Jared Dudley was called for an offensive foul, then Westbrook made a 7-foot runner and Oklahoma City led 64-59.
Collison's 20-footer with 6 seconds left put the Thunder up 79-73 after three quarters.
Harden sank a 3-pointer and had a three-point play sandwiched around Eric Manor's 3-pointer in a 8-2 spurt that put Oklahoma City up 87-77. Durant's 3-pointer with 5:18 remaining put the Thunder ahead 92-80 5:18 from the finish.
Oklahoma City outscored Phoenix 23-9 to start the final quarter to go up 102-82 after Perkins made four free throws in a row.
Notes: With their 115-114 victory over Golden State on Tuesday night, the Thunder became the fifth team in NBA history to win eight overtime games in a season. ... Phoenix fell two games under .500 for the first time since a Feb. 4 home loss to Oklahoma City. ... The Thunder completed their fifth sweep of back-to-back games this year.