Miami put themselves in a superior position on Monday night heading into game five by beating the Brooklyn Nets at the Barclays Centre 102-96.
The current NBA champions hold a good record against Brooklyn in these play-offs having won twice at the American Airlines Centre before falling to one defeat in Brooklyn, but Erik Spoelstra's men will be heading back home with a win the only target on their mind.
"He asked me and I didn't know if he was serious or not, and what I told him I cannot say again.
"So I wanted to finish out the game. I felt like it was a must-win for us."
Brooklyn meanwhile will feel this was an opportunity that slipped through their fingers, as a win would have tied the series, but the Nets centre Kevin Garnett noted to ESPN that this defeat was a difficult moment to take.
"This is very difficult to swallow. Hard to take, but it's what it is. Coulda, shoulda, woulda doesn't help us at this point."
Garnett only recorded eight points in 25 minutes of play, as the centre couldn't influence the game.
The visitors got off to a flyer in the opening quarter, beating the hosts 27-22.
James supplied the Heat scoring 12 points as the 29-year-old played the full 12 minutes hitting four of his seven attempted field goals.
Shaun Livingston recorded six for the hosts but the Heat were too strong.
Spoelstra's men kept up their domination as the secured the second quarter 29-27 with James again showing his talents.
The number six scored 13 points in seven minutes, while Chris Bosh added six points to the board scoring 100% of this field goals.
Deron Williams hit eight with Andrei Kirilenko adding six, but at half time Heat had a seven point lead at 56-49.
Jason Kidd was disappointed with the result so far but this didn't stop the coach giving his team a much needed boost, as Brooklyn bounced back to win the third quarter 27-23.
Joe Johnson hit eight in nine minutes for the hosts while Williams secured four assists.
Heat, again, had James carrying the batton as the forward played the full quarter and hit 15 points as going into the fourth Heat's lead was still intact, but it was brought down to three points.
But this third quarter was a glitch in Heat's game plan, as Spoelstra's side came out and delivered a solid performance winning the fourth 23-20.
James again took centre-stage and recorded nine points, but missed a free throw in the final seconds of the game to reach a career high of 50 points in a play-off game.
Paul Pierce hit seven for the Nets but there was no consistency about the hosts as a defeat was imminent.
Jason Kidd's team now have to go back to the American Airlines Arena on Wednesday night where a win is the only solution to keeping the Nets in these play-offs.
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