The men's 100-meter backstroke features swimmers covering two lengths of the pool in less than a minute. The event was first held at the 1904 Olympic Games, where German Walter Brack earned gold.
Here's a little bit about the last five men to win the event:
Aaron Peirsol: American Aaron Peirsol is one of the most decorated male backstroke swimmers in history. Peirsol twice won the 100-meter backstroke at the Olympic Games (2004 and 2008) and he earned medals in the 200-meter backstroke at three Olympic Games (2000, 2004 and 2008). He's a seven-time Olympic medalist and the current world record holder in the 100- and 200-meter backstrokes. He retired in 2011.
Lenny Krayzelberg: American Lenny Krayzelburg won the 100-meter backstroke at the 2000 Olympic Games. There, he also added gold medals in the 200-meter backstroke and the 4x100-meter medley relay. Krayzelburg also swam on the 4x100-meter medley relay during the preliminary heats at the 2004 Olympic Games, which gave him his fourth Olympic gold.
Jeff Rouse: American Jeff Rouse twice swam the 100-meter backstroke at the Olympic Games. In 1992 he earned a silver medal, and in 1996 he claimed the gold medal. The former-world-record holder also added a gold medal in the 4x100-meter medley relay at both the 1992 and 1996 Games.
Mark Tewksbury: During his Olympic career, Canadian Mark Tewksbury earned an Olympic medal of every color. In 1988, he earned a silver as a part of the men's 4x100-meter medley relay. In 1992, he claimed the top spot in the 100-meter backstroke and added a bronze medal in the men's medley. After the Games, Tewksbury returned home to much fanfare, as he was the first Canadian swimmer to earn a gold medal in eight years.
Daichi Suzuki: Japanese swimmer Daichi Suzuki first competed in the 100-meter backstroke at the 1984 Olympic Games, where he failed to qualify for the finals. In 1988, the then-21-year-old Suzuki surprised many when he defeated American David Berkoff to earn gold in the event. Perhaps Suzuki's victory shouldn't have been a surprise, though: He'd defeated Berkoff in the event twice before.
Read more from this author: The Last Five Men to Win the 200-Meter Butterfly at the Olympic Games
Sandra Johnson was a competitive swimmer for more than 15 years before she began coaching. She is a longtime Olympic fan, and while working for the United States Olympic Committee in Colorado Springs, Colo., she had the opportunity to immerse herself in the Olympic Movement. Follow her on Twitter: @SandraJohnson46
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