Russell Westbrook added his third triple-double of the season and Kevin Durant converted a three-point play, hit a tie-breaking three-pointer from the right wing and then added a jumper from the top of the key as the Thunder finally took the lead for good.
Washington's road record went to 0-22, the third-worst start in NBA history.
The Cleveland Cavaliers suffered a team record-equalling 19th straight loss as they were beaten 117-103 by the Denver Nuggets.
Carmelo Anthony scored 33 points and Arron Afflalo added 23 as the Cavaliers remained winless in 2011, leaving them five losses away from breaking the NBA record of 23 consecutive defeats in one season.
The Miami Heat rallied late on to win 88-87 over the Detroit Pistons as Eddie House hit two deciding free throws with 6.5 seconds left.
LeBron James led all scorers with 39 points.
Joe Johnson scored 34 points as the Atlanta Hawks won 111-102 agains the New York Knicks.
Mike Dunleavy scored 30 points as the Indiana Pacers' six-game losing streak came to an end with a 124-92 victory against the New Jersey Nets.
The Memphis Grizzlies rallied from a 21-point deficit to win 99-94 over the Philadelphia 76ers.
Corey Maggette hit a tie-breaking three-pointer in the final minute of overtime as the Milwaukee Bucks beat Toronto 116-110 which was a 10th straight loss for the Raptors.
The Chicago Bulls beat the Orlando Magic 99-90 and the Utah Jazz defeated the Minnesota Timberwolves 108-100.
The Sacramento Kings won 100-95 against the Los Angeles Lakers, Phoenix Suns defeated the Boston Celtics 88-71 and the Charlotte Bobcats beat the Golden State Warriors 121-113.