The Dwyane Wade-LeBron James reunion tour is reportedly on.

According to Adrian Wojnarowski of ESPN, Wade is leaning toward signing with the Cleveland Cavaliers and could finalize his decision by Wednesday when he clears waivers and becomes an unrestricted free agent.

Wade, 35, a 12-time All-Star, reached a contract with Chicago Bulls last week, and a move to reunite with James in Cleveland was one of the most obvious options. Wade and James was the best duo in the NBA for years, and the pair won two titles together in Miami. They're also longtime friends, so this seems like it would be a natural move.

Reunions of fantastic duos isn't something we get all that often in sports. Many times, when athletes go their separate ways, that's that. There's no getting the band back together and trying to reignite the spark that was captured the first time around. But sometimes fate brings the two back together. Sometimes it works, and the spark is recaptured. Sometimes it doesn't.

Wayne Gretzky and Mark Messier

"The Great One" and "The Moose" were the most formidable tandem in hockey for close to a decade with the Edmonton Oilers. Gretzky and Messier dominated the NHL in the 1980s on their way to four Stanley Cup title with the Oilers. The duo split after the fourth championship in 1988, when Gretzky was traded to Los Angeles. Messier, meanwhile, won another title with the Oilers, then one with the New York Rangers in 1994.

Following an eight-year run in L.A. and a brief stint with the St. Louis Blues, Gretzky and Messier got back together on the 1996-97 Rangers. They played together for one final season, but were defeated in the Eastern Conference Finals by the Philadelphia Flyers.

Dwight Howard and Josh Smith

This reunion goes all the way back to Howard and Smith's high school days. The pair played together in AAU ball with the Atlanta Celtics when they were two of the hottest hoops prospects in the country. In their best NBA playing days circa 2011, it was a dream of many Georgians that the two Atlantans reunite with the Hawks, which Smith played for between 2004 and 2013.

The reunion eventually happened ... but in Houston, when both players were past their prime. They did make a small playoff run in their one season together, making the Western Conference semifinals of the 2015 playoffs. That was the only season the AAU teammates played together in the pros.

Andy Pettite and Roger Clemens

Pettite and Clemens were dynamite together in the early aughts with the New York Yankees. The peak of their prowess together came in 2000, when they led the Yanks to a World Series, and 2001, when they were both named All-Stars and Clemens won the AL Cy Young Award. It seemed their story would end in 2003, when Clemens retired.

But The Rockert didn't stay retired for long, and joined Pettite on the Houston Astros in 2004. They played three seasons together in Houston, then returned to the Yankees for one more season together in 2007, after which Clemens left the game for good. Pettite kept playing until 2010. 

Gordon Hayward and Brad Stevens

This player-coach combo goes back to the Butler Bulldogs. In 2010, Butler made the NCAA Tournament championship game and lost to Duke when Hayward's half-court shot rimmed out at the buzzer. Hayward jumped to the NBA and was drafted by the Jazz. Stevens followed suit in 2013, following one more NCAA final appearance, to coach the Celtics.

The two got back together when Hayward signed with the Celtics as a free agent this summer. Hayward has said his relationship with Stevens is overstated and wasn't a driving factor when signing with Boston. But it will still be cool to see if they can recapture whatever it was that made them so good together at Butler seven years ago.

Dwight Gooden and Darryl Strawberry

Gooden and Strawberry were among the best and most famous athletes in America during their heyday with the Mets in the 1980s. But career downturns and substance abuse problems eventually took their toll. Both players landed on the Yankees in 1996 during a career revival for each and -- along with fellow former Met David Cone -- won the World Series.

Clyde Drexler and Hakeem Olajuwon

This duo was part of the famed Phi Slama Jama University of Houston teams that made consecutive Final Four appearances in the early 1980s. They spent 10 years apart in the NBA, with Drexler playing for the Trail Blazers and Olajuwon for the Rockets.

But in February 1995, with the Blazers well out of contention, Portland agreed to a swap that sent Drexler to play with his friend Olajuwon on the Rockets. Even though Houston were a sixth-seed, Olajuwon and Drexler propelled the Rockets through the playoffs, and they won the NBA title after just a few months back together.

Andre Iguodala and Luke Walton

Iguodala and Walton spent one season together at Arizona -- when Walton was a senior and Iguodala a freshman -- then their careers took divergent paths. Walton was picked in the second round of the 2003 draft and retired in 2013 after spending most of his career on the bench. Iguodala was a lottery pick and spent close to a decade as the star of the Sixers before becoming one of the best role players in basketball with the Warriors.

And that's where the two met again, just not as teammates. In 2014, Walton joined the Warriors as an assistant coach. As coach and player, they spent two seasons together, winning the 2015 NBA Finals. Walton even served as interim head coach for awhile when Steve Kerr took a leave of absence over his back issues, and did a good job coaching Iguodala and the Warriors, leading them to a 19-0 start to the 15-16 season. Walton is now coaching the Lakers. Iggy is still with Golden State.

Mike Miller and Udonis Haslem

Miller and Haslem were teammates at the University of Florida between 1998 and 2000, when the Gators lost to Michigan State in the national title game. A decade later, they were together again, now with the Miami Heat. LeBron, Wade and Chirs Bosh were the stars of the Heat teams that won titles in 2010 and 2011, but Miller and Haslem were important role players. Miller and Haslem didn't win a title when they were paired up the first time around, so they snagged two the second time.

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Cy Brown writes about football, golf, soccer and other stuff for Sports on Earth. Follow him on Twitter@CEPBrown.