OKLAHOMA CITY -- Forward Kevin Durant scored 33 points to lead the Oklahoma City Thunder to a 106-105 overtime victory over the Washington Wizards on Sunday night at the Chesapeake Energy Arena.

But it didn't come easy and they had to do it without one of their floor leaders.

With 3:19 left in the game, Thunder guard Russell Westbrook and Wizards center Nene were ejected from the game after receiving double technicals during a scuffle that saw Westbrook push Nene.

The altercation seemed to spur the Thunder (5-1) on. Without Nene in the lane, forward Serge Ibaka hit a turnaround jumper with 2:10 left to cut the Wizards' lead to 92-86.

Guard Jeremy Lamb knocked down a 3-pointer and Ibaka threw down a monster dunk to cut deficit to 92-91 with 1:10 remaining on clock.

With 18 seconds left, Washington (2-4) led 94-93. With the entire arena screaming defense, guard Bradley Beal cruised to the basket for an easy lay-up and gave the Wizards a three-point advantage.

Durant wasn't fazed. On the ensuing possession, he pulled up from the top of the key and drained a game-tying 3-pointer with forward Trevor Ariza in his face. The game went to overtime.

Beal put the Wizards up 103-102 with 1:50 left in overtime with a 3-pointer from the corner. Oklahoma City turned the ball over and center Marcin Gortot made them pay with a layup.

Ibaka closed the gap to one point with a putback of guard Reggie Jackson's missed layup Ariza tried to responded with a jumper, but Durant came up with the blocked shot and was fouled going for the layup. He hit both free throws to put Oklahoma City up 106-105.

Washington got the ball with four seconds left on the clock and trailing by one. It was enough time for Wall to get up a shot, but it was off the mark as the buzzer sounded.

It was the Thunder's first time ever winning when trailing by 12 or more points in the fourth quarter.

Beal led the Wizards with 34 points on 6-of-8 shooting from behind the arc. Ariza added 15 points and five rebounds.

Ibaka scored 25 points to go along with 12 rebounds. Westbrook added 13 points and four assists before the ejection.

NOTES: Oklahoma City has received solid help from its bench. Heading into Sunday's game, the Thunder reserves rank in the top 20 in both rebounding and assists, are third in field goal percentage and opposing field goal percentage. They also are 11th in scoring at 34.6 points per game. Rookie C Steven Adams, veteran G Derek Fisher, G Reggie Jackson and G Jeremy Lamb have been the mainstays for the bench production so far. "It's been good," Thunder coach Scott Brooks said. "We have a good mix. Reggie leads that group as the point guard. I think he's done a good job. Nick [Collison] brings the veteran leadership, the stable force out there." ... Washington coach Randy Whitman has been impressed with his team's ability to take care of the ball. As a team the Wizards are averaging only 16 turnovers a game before Sunday's contest. "I think our assist-to-turnover ratio has been very high," Whitman said. "That's something, through the preseason and start of the season, we wanted to focus on our turnovers and not turn the ball over at a high rate. I think that's really been a big part of it. Taking care of the ball and getting quality shots at the other end." ... With G John Wall in his lineup, Whitman knows the benefits that having a fast aggressive point guard can have for a team. So it was no surprise he is impressed with what Oklahoma City G Russell Westbrook does for the Thunder. "He's a big part of this team," Whitman said. "They saw that last year when they lost him. I'm sure getting him back is going to solidify what this team is capable of doing. He presents a challenge for everybody. His speed with the ball up and down the floor is as good as anybody in the league." ... Oklahoma City F Collison sat out the game against Washington with a hip contusion. He is day to day.