In a loss to Houston on Sunday, OKC was 1-of-15 on 3-pointers.

"We have great shooters. You'll have off nights," said Oklahoma City's Jeff Green. "We continued to work on our shooting. We knew this type of performance would happen again. You could see the way we responded tonight we're all capable of knocking down shots."

Kevin Durant was 5-of-7 on treys to account for nearly half of his game-high 33 points. Durant entered the game shooting 24.2 percent on 3-pointers after shooting 42.0 percent from long distance last season.

"I don't see myself as a 3-point shooter," Durant said. "I can contribute to the team besides shooting 3's, shooting pull-up jump shots and getting to the line. But it was good to get my 3-ball going. We worked on it a lot yesterday in practice. Everybody got extra shots in, and tonight they fell for us."

For much of the game, it looked like a 3-point contest. The Sixers hit six of their first seven 3-pointers and finished 14-of-23 beyond the arc.

"It makes the game a lot easier when we're moving the ball and knocking down shots," said Thunder rookie James Harden. "It gets hard to guard us. That's what happened tonight."

OKC has been hot and cold all season on 3's. In eight games, the Thunder has made three or less 3's. But they've also had six games where they've made eight or more.

"We can't go into a game expecting to make 12 3's, but I told the guys before the game, 'If you're open, you have to shoot it,'" said Thunder coach Scott Brooks. "The game of Basketball tells you have to shoot. Our guys stepped up and shot it with a lot of confidence."