The history of sports is both vast and rich, thanks to the existence of so many different ones and the longevity associated with them. With so much history to cull through, Athlon Sports wanted to offer the opportunity to look back and see what memorable things happened or milestones were reached on a specific date.
With that in mind, June 20 is the day in which Tom Watson gave us one of golf's greatest moments and two MLB sluggers reached home run milestones.
1960: Floyd Patterson regained his heavyweight title with a fifth-round knockout of Ingemar Johansson at New York's Polo Grounds. Patterson had lost the title to Johansson a year earlier and became the first person to win the heavyweight title twice.
1980: Roberto Duran won the welterweight title with a 15-round decision over Sugar Ray Leonard at Montreal's Olympic Stadium. The loss was the first of Leonard's career, but he got revenge on Duran six months later in New Orleans.
1982: Tom Watson won the U.S. Open by two strokes ahead of Jack Nicklaus at California's Pebble Beach Golf Links. Watson birdied on the final hole in one of the greatest moments in golf history.
1993: Michael Jordan scored 33 points and John Paxson hit a three-pointer with 3.9 seconds left to give the Chicago Bulls a 99-98 victory over the Phoenix Suns at the America West Arena and take the NBA Finals in six games. This marked the first of the Bulls two three-peats.
1999: Payne Stewart won the U.S. Open by one stroke over Phil Mickelson at North Carolina's Pinehurst resort. It was Stewart's second U.S. Open win but would be his last, as he died in a plane crash four months later.
2004: Ken Griffey Jr. hit his 500th home run as the Cincinnati Reds beat the Milwaukee Brewers 6-2 at the Great American Ball Park. With the dinger, he also tied his father's career hit mark at 2,143, and to wrap everything up in a bow, he did it on Father's Day, with his dad sitting in the stands.
2006: The Miami Heat came back from down 2-0 to the Dallas Mavericks in the NBA Finals to win four straight and beat the Mavs 95-92 at Dallas' American Airlines Center in Game 6. During that four-game run, Dwayne Wade averaged 39.3 points.
2007: Texas Rangers outfielder Sammy Sosa hit his 600th home run off of Jason Marquis in a 7-3 win over the Chicago Cubs at Rangers Ballpark in Arlington.
— Written by Aaron Tallent, who is part of the Athlon Contributor Network. Tallent is a writer whose articles have appeared in The Sweet Science, FOX Sports' Outkick the Coverage, Liberty Island and The Washington Post. Follow him on Twitter at @AaronTallent.