The men's 50 metre freestyle competition of the swimming events at the 2015 World Aquatics Championships was held on 7 August with the heats and the semifinals and 8 August with the final.
The men's 100 metre freestyle competition of the swimming events at the 2015 World Aquatics Championships was held on 5 August with the heats and the semifinals and 6 August with the final.
The women's 100 metres at the 2015 World Championships in Athletics was held at the Beijing National Stadium on 23 and 24 August. Shelly-Ann Fraser-Pryce entered the competition as the defending champion and the world leading athlete that season with a time of 10.74 seconds.
The women's 400 metres hurdles at the 2015 World Championships in Athletics was held at the Beijing National Stadium on 23, 24 and 26 August.
The women's heptathlon at the 2015 World Championships in Athletics was held at the Beijing National Stadium on 22 and 23 August.
The Men's 100 metre breaststroke competition at the 2017 World Championships was held on 23 and 24 July 2017.
The Men's 100 metre freestyle competition at the 2019 World Championships was held on 24 and 25 July 2019.
The Men's 200 metre freestyle competition at the 2019 World Championships was held on 22 and 23 July 2019. Sun Yang was the defending champion, and defended his title. Lithuania's Danas Rapšys finished first, but was disqualified for flinching just before the start. During the medal ceremony, Great Britain's Duncan Scott refused to shake hands with China's Sun Yang, with Sun Yang calling Scott a "loser" in response.
The Men's 400 metre freestyle competition at the 2019 World Championships was held on 21 July 2019. The three-time defending champion was Sun Yang, and he successfully defended his title for a record-breaking 4th consecutive victory in the world championships in this event. He became the third man to win an event 4 times at the world championships after Grant Hackett in the 1500 meter freestyle and Ryan Lochte in the 200 meter individual medley.
The Men's 100 metre backstroke competition at the 2019 World Championships was held on 22 and 23 July 2019. The defending champion was Xu Jiayu, and he successfully defended his title. Jiayu set a competition record in the semifinals by winning his semifinal in 52.17 seconds.
The Men's 50 metre breaststroke competition at the 2019 World Championships was held on 23 and 24 July 2019.
The Men's 50 metre butterfly competition at the 2019 World Championships was held on 21 and 22 July 2019. The defending champion Ben Proud finished 7th in the final. The winner, Caeleb Dressel, set a competition record in the final, winning in 22.35 seconds.
The Men's 100 metre butterfly competition at the 2019 World Championships was held on 26 and 27 July 2019. The defending champion Caeleb Dressel broke Michael Phelps' ten-year-old record by 0.32 second in the semi-final, setting a new world-record time of 49.50 seconds. Dressel won the final held the following day, defending his title.
The Men's 200 metre butterfly competition at the 2019 World Championships was held on 23 and 24 July 2019. The event was won by Kristóf Milák, who broke a 10-year-old record set by Michael Phelps, and set a new world-record time of 1:50.73 in the process.
The Women's 200 metre freestyle competition at the 2019 World Championships was held on 23 and 24 July 2019.
The Women's 400-metre freestyle competition at the 2019 World Championships was held on 21 July 2019. Ariarne Titmus overcame a 0.62-second deficit in the last 50 metres to defeat defending champion Katie Ledecky. This was Ledecky's first loss in a major international 400 metre freestyle competition.
The Women's 800-metre freestyle competition at the 2019 World Championships was held on 26 and 27 July 2019. Defending champion Katie Ledecky successfully defended her title in 8:13.58 with a final lap comeback against Italy's Simona Quadarella.
The Women's 1500 metre freestyle competition at the 2019 World Championships was held on 22 and 23 July 2019. The defending champion was Katie Ledecky, but she was forced to withdraw due to illness.
The men's 110 metres hurdles at the 2019 World Athletics Championships was held at the Khalifa International Stadium in Doha from 30 September to 2 October.
The women's 100 metres at the 2019 World Athletics Championships was held at the Khalifa International Stadium in Doha, Qatar, on 28 to 29 September 2019.
