LeBron James had to dig deep to help salvage the Heat season and ward off another offseason of undeserved vitriol, and he had to do it mostly without his right-hand man, Dwyane Wade.

Despite a shaky first three quarters, James finished with a triple-double of 32 points, 10 rebounds and 11 assists to lead the Heat to a wild 103-100 overtime victory and force a Game 7 for the NBA championship on Thursday.

Wade, who despite a balky knee was coming off back-to-back games of 32 and 25 points, but clearly retweaked his sore left knee in an early first-quarter collison with Manu Ginobili.

Wade needed extended treatment during halftime and didn't enter the game in the third quarter until 2:22 had expired with the Heat down five points. He finished with a pedestrian 14 points on 6-of-15 from the field with four rebounds, four assists and three turnovers.

"Yes," Wade responded to a reporter asking if he hurt his knee. "Nothing, that we're going to talk about."

Wade had just two points in the fourth quarter and none in the overtime.

With the Heat down 10 points to start the fourh quarter, James led a 22-9 run with Wade on the bench for the entire burst. But still the Heat needed a Ray Allen 3-pointer with 5.2 seconds left to force overtime.

"Just no quit in this team," Wade said in a happy locker room. "The game of basketball is a funny thing. I wish we could say how and why [we won]. That's why we love this game. It's unpredictable. That's why the only thing you can do when things look dim and dark is just keep going."

Wade re-entered with 3:48 left and did have a block and two made free throws to give Miami a 3-point lead with 2:09 left in regulation. Tony Parker quickly erased that with a fadeaway 3-pointer.

Wade said the Heat drew extra motivation when they saw the arena workers preparing for the postgame trophy presentation to the Spurs.

"When they brought out the yellow rope [for the trophy presentation], you know you're not the one that's going to celebrate and it hurts, so we just kept fighting to the last minute, to the last second, and it happened tonight."