The men's 50 metre butterfly at the 2007 World Aquatics Championships took place on 25 March and on the evening of 26 March (final) at Rod Laver Arena in Melbourne, Australia. 160 swimmers were entered in the event, of which 152 swam.
The men's 50 metre backstroke at the 2007 World Aquatics Championships took place on 31 March and on the evening of 1 April (final) at Rod Laver Arena in Melbourne, Australia. 107 swimmers were entered in the event, of which 98 swam.
The men's 200 metre butterfly at the 2007 World Aquatics Championships took place on 27 March and on the evening of 28 March (final) at Rod Laver Arena in Melbourne, Australia. 64 swimmers were entered in the event, of which 62 swam.
The Women's 50m Breaststroke at the 2007 World Aquatics Championships took place on 31 March and the evening of 1 April (finals) at the Rod Laver Arena in Melbourne, Australia. 86 swimmers were entered in the event, of which 74 swam.
The Women's 100m Breaststroke at the 2007 World Aquatics Championships took place on 26 March and the evening of 27 March (finals) at the Rod Laver Arena in Melbourne, Australia. 72 swimmers were entered in the event, of which 70 swam.
The Women's 200m Breaststroke at the 2007 World Aquatics Championships took place on 29 March and the evening of 30 March (finals) at the Rod Laver Arena in Melbourne, Australia. 55 swimmers were entered in the event, of which 54 swam.
The men's 400 metre individual medley (IM) at the 2007 World Aquatics Championships took place on 1 April at the Rod Laver Arena in Melbourne, Australia. As the event was over 400 meters in length, no semifinals were held in it and the top 8 swimmers from the preliminary heats advance directly to the single final heat. 50 swimmers were entered in the event, of which 49 swam.
The men's 200 metre individual medley (IM) at the 2007 World Aquatics Championships took place on 28 March and on the evening of 29 March (final) at Rod Laver Arena in Melbourne, Australia. 79 swimmers were entered in the event, of which 74 swam.
The men's 100 metre butterfly at the 2007 World Aquatics Championships took place on 30 March and on the evening of 31 March (final) at Rod Laver Arena in Melbourne, Australia. 123 swimmers were entered in the event, of which 118 swam.
The men's 200 metre breaststroke at the 2007 World Aquatics Championships took place on 29 March and on the evening of 30 March (final) at Rod Laver Arena in Melbourne, Australia. 85 swimmers were entered in the event, of which 79 swam.
The men's 100 m freestyle at the 2009 World Championships took place on 29 July and the evening of 30 July (finals) at the Foro Italico in Rome, Italy.
The men's 100 metre backstroke at the 2009 World Championships took place Monday 27 July and on the evening of Tuesday 28 July (final) at the Foro Italico in Rome, Italy.
The heats for the Women's 100m Breaststroke race at the 2009 World Championships took place on Monday, 27 July and Tuesday 28 July (final) at the Foro Italico in Rome, Italy.
The men's 200 metre backstroke at the 2007 World Aquatics Championships took place on 29 March and 30 March (final) at Rod Laver Arena in Melbourne, Australia. 57 swimmers were entered in the event, of which 55 swam.
The Men's 200 Freestyle at the 11th FINA World Aquatics Championships swam 25+26 July 2005 in the Olympic pool at Parc Jean-Drapeau in Montreal, Canada. 95 swimmers were entered in the Preliminary heats, which swam in the morning of July 25. The top-16 swimmers from the Prelims advanced on to Semifinal heats that evening. From the Semifinals, the top-8 swimmers advanced onto the next night's Final.
The men's 100 metre freestyle at the 2005 World Aquatics Championships occurred on 27 July and in the evening of 28 July (final) in the Olympic pool at Parc Jean-Drapeau in Montreal, Canada. 131 swimmers were entered in the event, of which 124 swam in one of 17 preliminary heats. The top-16 swimmers from the heats advanced on to semifinals; the top-8 swimmers in the two semifinals heats advanced onto the next night's final.
The men's 50 metre breaststroke competition of the swimming events at the 2011 World Aquatics Championships was held on July 26 with the heats and the semifinals and July 27 with the final.
The Men's 50 Breaststroke event at the 10th FINA World Aquatics Championships swam July 22 – 23, 2003 in Barcelona, Spain. Preliminary and Semifinal heats were on 22 July, with Prelims swum in the morning session and Semifinals in the evening session. The Final swam in the evening session on 25 July.
Anton Mikhailovich Chupkov is a Russian competitive swimmer. He is the European record holder in the long course 200 metre breaststroke and the Russian record holder in the long course 100 metre breaststroke. He formerly held the world record in the long course 200 metre breaststroke. At the 2015 European Games he won four gold medals in individual and relay events. He won the bronze medal in the 200 metre breaststroke at the 2016 Summer Olympics. He won the gold medal in the 200 metre breaststroke at the 2017 and 2019 World Aquatics Championships.
Nicolò Martinenghi is an Italian swimmer. He competed in the men's 100 metre breaststroke at the 2019 World Aquatics Championships. He won the bronze medal in the 100 metre breaststroke at the 2020 Summer Olympics. At the 2022 World Aquatics Championships, he won the gold medal in the 100 metre breaststroke and the 4×100 metre medley relay and the silver medal in the 50 metre breaststroke.
