Trailing by seven points with just 49 seconds remaining, Oklahoma City's marquee players scored the game's last eight points to steal victory in front of a raucous home crowd and take a 3-2 series lead.
Forward Kevin Durant hit a three-pointer and a layup, and guard Russell Westbrook hit three clutch free throws to lead the second-seeded Thunder to victory.
Westbrook led all scorers with 38 points while Durant added 27. Blake Griffin led the Clippers with 24 points and 17 rebounds, Chris Paul added 17 points and 14 assists, and Jamal Crawford came off the bench to score 19.
Game Six is in Los Angeles on Thursday, where the third-seeded Clippers will be hoping to send the series to a decider.
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The Washington Wizards staved off elimination with a dominant 102-79 win over the Indiana Pacers, narrowing the deficit to 3-2 in their NBA Eastern Conference semi-final series.
Marcin Gortat produced 31 points and 16 rebounds and John Wall stepped up with 27 points to lead the Wizards to a blowout win and at least another game this season.
"We played desperate," said Gortat, who tied a career high in scoring. "That's all we can do. We have no other choice."
Having blown a 19-point second-half lead in the previous game, the Wizards were not about to be run down again, turning a seven-point half-time lead into a 24-point cushion through three quarters.
From there they cruised to victory, holding Roy Hibbert to just four points and two rebounds for the top-seeded Pacers.
David West top scored for Indiana with 17.
The Pacers made just 39 percent of their shots, trailed by 30 points at one stage and went down to their most lopsided play-off loss since a 26-point defeat to the New York Knicks in last year's Eastern Conference semi-finals.
The Pacers missed 47 shots and had only four offensive rebounds.
The Wizards totaled 18 offensive rebounds, led by Gortat's seven, and made 50 percent of their shots.
"Clearly, we didn't match their desperation and physicality throughout the game," Indiana coach Frank Vogel said.
Washington guard John Wall scored 17 of his 27 points in the third quarter, when the Wizards turned a seven-point halftime lead into a 24-point advantage.
Washington are attempting to reach the Eastern Conference finals for the first time since 1979.
"We still have an opportunity," Wizards coach Randy Wittman said. "If we play our way, we can beat these guys."
- Sports & Recreation
- Washington Wizards
- Kevin Durant
- Russell Westbrook
- Marcin Gortat