In the history of World Aquatics Championships, some races have been incredibly close. There have even been some ties atop the podium.
Notably, this happened in two events at the 2011 Worlds in Shanghai: the men’s 100 backstroke, with Frenchmen Camille Lacourt and Jeremy Stravius sharing the gold medal, and in the women’s 100 freestyle, with Belarus’ Aliaksandra Herasimenia and Denmark’s Jeanette Ottesen landing alongside one another atop the podium.
On the other hand, there are other races in which a given swimmer is so dominant that they’re head and shoulders ahead of the runner-up.
Instagram’s Swimming Stats page has published the list of the biggest margins of victory in the history of the World Aquatics Championships. And there are some that really stand out.
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In women’s events, it is remarkable that Sweden’s Sarah Sjostrom managed, in a 50-meter race, to finish 78 one-hundredths ahead of the runner-up. This happened in 2017 in the women’s 50 fly. In fact, in the four times she has won the race, the smallest margin of victory was 0.33 in 2019.
Katie Ledecky also deserves a mention. In both the 800 free and the 1500 free, she is the only athlete to have won with a margin of victory in the double digits (10+ seconds): twice in the 800 and three times in the 1500.
The margin of victory of more than 7sevenseconds by Petria Schneider in the 400 IM in 1982 is noteworthy. Her world record of 4:36.10 lasted 15 years.
By comparison, in relative terms, no margin of victory exceeds that of Cornelia Sirch in the 200 backstroke in 1982, 5.05 ahead of Australia’s Georgina Parkes: this represents an average margin of 1.26 per 50 meters. Who comes closest is Leisel Jones, who in 2005 won the 200 breaststroke with a 4.12 advantage, or 1.03 every 50 meters.
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In the men’s events, it is remarkable that Australian Grant Hackett imposed a 24.38-second lead over Great Britain’s Graeme Smith in the 1500 freestyle in 2001. Even Katie Ledecky couldn’t get more than a 20-second advantage in the 1500.
Margins of victory of more than three seconds in 200-meter events in modern swimming represent great dominance, and that is why Michael Phelps‘ 200 IM win in 2003 and Kristof Milak’s 200 fly triumph in 2019 stand out among the rest – their world records, at the time, shocked the world.
Analyzing the average advantage per 50 meters, however, nobody surpasses East German Roland Matthes in the men’s events. Matthes won the 200 backstroke in 1973 with a world record time of 2:01.87, 4.02 seconds clear of the second-place finisher, or 1.005 every 50 meters. Having also won the 100 backstroke by 1.30 seconds, this is one of the reasons why he is considered by many as the most dominant backstroke swimmer in history.