Despite trailing for most of the game, the Spurs were still within two points with less than 30 seconds to go, but Duncan missed a routine layup, then James nailed a jump shot and added two free throws.
James averaged 25.3 points during the Finals, joining Michael Jordan and Bill Russell as the only players to win the regular season and Finals Most Valuable Player awards two years running.
Russell presented him with his trophy as confetti rained down from the ceiling and fireworks exploded outside over the Miami skyline.
“This is the ultimate,” James said. “I can’t worry about what everybody says about me. I’m LeBron James from Akron, Ohio, from the inner city. I’m not even supposed to be here. That’s enough. Every night I walk into the locker room, I see a No. 6 ‘James’ on the back, I’m blessed.”