The Men's 100 metre breaststroke competition of the 2024 World Aquatics Swimming Championships (25 m) was held on 11 and 12 December 2024.
Records.
Prior to the competition, the existing world and championship records were as follows:
The following record was established during the competition:
Background.
Qin Haiyang of China had the fastest qualifying time with an Asian record of 55.61, set at the Singapore leg of the 2024 World Cup. He was tied for fourth all-time in the event. The only swimmer ranked above him in the all-time standings competing in Budapest was world record holder Ilya Shymanovich of Belarus (competing as a Neutral Athlete at this competition), who set his mark at 55.28 in 2021. Shymanovich outperformed Qin at the Incheon stop of the World Cup, though his season best of 55.72 also came in Singapore. Kirill Prigoda, competing as a neutral athlete from Russia, was the only other swimmer under 56 seconds so far in the season, having recorded a lifetime best of 55.95. Emre Sakçı of Turkey, a past sub-56 swimmer, entered with a slower season best of 59.53. Simone Cerasuolo of Italy had recently swam a personal best of 56.28, while Germany’s Lucas Matzerath had a lifetime best of 57.04. Japan’s Taku Taniguchi posted a 56.27 at nationals. Caspar Corbeau of the Netherlands and Australia’s Joshua Yong recorded lifetime bests of 56.59 and 56.66 respectively. Aleksandr Zhigalov, also from Russia and competing as a neutral athlete, swam 56.58. Other entrants included Caio Pumputis of Brazil, Bernhard Reitshammer of Austria, Michael Andrew of the United States, Denis Petrashov of Kyrgyzstan, and Finlay Knox of Canada.
"SwimSwam" predicted Shymanovich would win, Haiyang would take second, and Prigoda would take third.
Results.
Heats.
The heats were started on 11 December at 10:13.
Semifinals.
The semifinals were started on 11 December at 18:24.
Final.
The final was started on 12 December at 18:38.