LeBron James highlights in the NBA

Soaring over Tim Duncan: LeBron James of the Cleveland Cavaliers goes in for a slam dunk over Tim Duncan of the San Antonio Spurs on Nov. 3, 2006, at the AT&T Center in San Antonio, Texas.

NBA playoff debut: LeBron James of the Cleveland Cavaliers tries to get a shot off over Michael Ruffin of the Washington Wizards in Game 1 of the Eastern Conference Quarterfinals during the 2006 NBA Playoffs at Quicken Loans Arena in Cleveland.

First MVP in 2009: Fans show support of LeBron James of the Cleveland Cavaliers as he holds up the Maurice Podoloff Trophy after being named the 2009-10 NBA MVP prior to playing the Boston Celtics in Game 2 of the Eastern Conference Semifinals during the 2010 NBA Playoffs at Quicken Loans Arena in Cleveland.

The decision: Eric Murosk stands in a large crowd of fans assembled outside the Boys & Girls Club of Greenwich hours before LeBron James was to arrive in Greenwich, Conn. Free agent NBA player LeBron James announced live on ESPN from there that he will be playing for the Miami Heat in the coming season.

The decision: LeBron James attends the LeBron James Pre Decision Meet and Greet on July 8, 2010, in Greenwich, Conn. Proceeds from the $2.5-million event were donated to the Boys & Girls Clubs of America.

LeBron James helped the Miami Heat win two NBA titles in four Finals appearances.  (Don Emmert / AFP/ Getty Images)

First championship: NBA Finals MVP LeBron James of the Miami Heat holds the championship trophy after defeating the Oklahoma City Thunder in Game 5 of the NBA Finals on June 21, 2012, at the American Airlines Arena in Miami.

Block party: LeBron James of the Miami Heat blocks the shot of Tiago Splitter of the San Antonio Spurs in the fourth quarter during Game 2 of the 2013 NBA Finals at American Airlines Arena in Miami.

Return to Cleveland: A Cleveland Cavaliers fan reacts to the news of LeBron James’ return to Cleveland on July 11, 2014, in Cleveland.

Pinned: LeBron James of the Cleveland Cavaliers blocks a shot by Andre Iguodala of the Golden State Warriors in Game 7 of the 2016 NBA Finals at Oracle Arena in Oakland.