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, May 21 is a day the NFL determined its fastest man and NASCAR saw one of its greatest feuds.
1919: The New York Giants traded outfielder Jim Thorpe to the Boston Braves, where he ended his baseball career.
1932: Amelia Earhart landed in a cow pasture in Culmore, Northern Ireland, becoming the first woman to fly solo nonstop across the Atlantic Ocean.
1975: "Cornbread, Earl and Me" was released in movie theaters. The film about a police shooting of a star basketball player remains relevant today.
1988: Darrell Green beat Rod Woodson in the NFL's Fastest Man Competition in Palm Desert, California.
1989: Rusty Wallace won The Winston (NASCAR's All-Star race) after spinning out Darrell Waltrip with two laps to go and sending his Tide-sponsored car sliding across the grass. The "Tide Slide" caused a fight between the drivers' pit crews and prompted Waltrip to say that he hoped Wallace "choked" on his winnings from the race.
2009: Denver Nuggets forward Carmelo Anthony scored 34 points in a 106-103 win over the Los Angeles Lakers at the Staples Center to even the Western Conference Finals at 1-1. It was the first time in 24 years that the Nuggets had beaten the Lakers in a playoff game, but they would fall in six games.
2017: The Ringling Bros. and Barnum & Bailey Circus performed its final show at Nassau Veterans Memorial Coliseum in Uniondale, New York, ending a run of 146 years.
— 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.