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.
Sarah Fredrika Sjöström is a Swedish competitive swimmer specialising in the sprint freestyle and butterfly events. She is the current world record holder in the 50-meter freestyle, the 100-meter freestyle, the 50-meter butterfly, the 100-meter butterfly, and the 4×50-meter medley relay. She is a former world record holder in the 50-meter freestyle, 100-meter freestyle, 100-meter butterfly, and 200-meter freestyle. She is the first Swedish woman to win an Olympic gold medal in swimming. She won the Overall Swimming World Cup in 2017 and 2018 and she has won 10 individual World Championship gold medals. She currently represents Energy Standard in the International Swimming League.
This article includes the world record progression for the 4×200 metres freestyle relay, and it shows the chronological history of world record times in that competitive swimming event. The 4×200 metres freestyle relay is a relay event in which each of four swimmers on a team swims a 200-metre freestyle leg in sequence. The world records are recognized by and maintained by FINA, the international competitive swimming and aquatics federation that oversees the sport in international competition.
The men's 1500 metre freestyle at the 2007 World Aquatics Championships was held on the morning of 31 March (heats) and the evening of 1 April (final) at Rod Laver Arena in Melbourne, Australia. 50 swimmers were entered in the event, of which 47 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 800m Freestyle at the 11th FINA World Aquatics Championships occurred on the morning of 26 July 2005 and in the evening of 27 July 2005 in the Olympic pool at Parc Jean-Drapeau in Montreal, Canada. 45 swimmers were entered in the event, of which 44 swam. The top-8 swimmers from the morning heats advanced to the next day's final heat.
The men's 400 metre freestyle at the 2005 World Aquatics Championships took place on 24 July in the Olympic pool at Parc Jean-Drapeau in Montreal, Canada. 57 swimmers were entered and in the event in the preliminary heats, the top-8 of which advanced on to swim again in the final heat that event.
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 swimming portion of the 2011 FINA World Championships was held July 24–31 at the Shanghai Oriental Sports Center in Shanghai, China. Swimming is one of five aquatic disciplines at the championships.
The Women's 200 Freestyle at the 11th FINA World Aquatics Championships was swum 26 and 27 July 2005 in Montreal, Quebec, Canada. On 26 July, preliminary heats and semifinals occurred, and on 27 July a final heat was swum in the evening. 64 swimmers were entered in the event, of which 62 swam in one of 8 heats. The top-16 swimmers from the preliminary heats advanced on to semifinals; the top-8 swimmers in the two semifinals heats advanced onto the next night's final.
Gregorio Paltrinieri is an Italian competitive swimmer. He is the Olympic and world long course and short course champion and three-times European long course champion in the 1500 m freestyle event at the 2012, 2014 and 2016 European Aquatics Championships, and two-times European long course champion in the 800 m freestyle event. Paltrinieri is a former 1500 m freestyle world record holder. He also holds the long course European records in the 800 m and 1500 m freestyle events with times of 7:39.27 and 14:33.10.
Vladimir Viktorovich Morozov is a Russian competitive swimmer and Olympic medalist. He is the former world record holder in the short course 100-metre individual medley, the current textile world record, World Cup record and Russian national record holder in the 100-metre individual medley and 100-metre freestyle, and Russian record holder in the 50-metre freestyle. He also holds the European record for the 100-metre individual medley. Formerly he held the Russian national record in the 50-metre backstroke and the 50-metre butterfly, and held the European and Russian records in the 50-metre breaststroke.
The Men's 1500 metre Freestyle event at the 10th FINA World Aquatics Championships swam on July 26–27, 2003 in Barcelona, Spain. Preliminary heats swam in the morning session on July 26, with the top-8 finishers advancing to swim again in the Final during the evening session on July 27.
Florian Wellbrock is a German swimmer. He is the world record holder in the short course 1500 metre freestyle. He won gold medals in the 10 kilometre open water swim and 1500 metre freestyle at the 2019 World Aquatics Championships. At the 2020 Summer Olympics he won the gold medal in the 10 kilometre open water swim and the bronze medal in the 1500 metre freestyle. In December 2021, he won a gold medal in the 1500 metre freestyle at the 2021 World Short Course Championships.
Kristóf Milák is a Hungarian swimmer. He is the current holder of the world record in the long course 200 metre butterfly and the European record in the long course 100 metre butterfly. He also currently holds the Hungarian record in the short course 50 metre backstroke. At his first Olympic Games, the 2020 Summer Olympics, he won a gold medal in the 200 metre butterfly and a silver medal in the 100 metre butterfly. He has also won one gold medal and one silver at the World Aquatic Championships, as well as three gold medals at the European Aquatics Championships. He was the gold medalist in the 400 metre freestyle, 200 metre freestyle, and 200 metre butterfly events at the 2018 Summer Youth Olympics.
Szebasztián Szabó is a Hungarian swimmer. He is a world record holder in the short course 50 metre butterfly. He competed in the men's 50 metre butterfly event at the 2017 World Aquatics Championships representing Serbia. In 2019, Szabó was member of the 2019 International Swimming League representing Team Iron. The same year he chose represent Hungary in the future, which was granted by FINA.
Andrey Dmitriyevich Minakov is a Russian swimmer and Olympian. He is the current world junior record holder in the 50 metre butterfly, both short course and long course, and a former world junior record holder in the long course 100 metre freestyle. He is the Russian record holder in the long course 100 metre butterfly. At the 2019 World Aquatics Championships, he won silver medals in the 100 metre butterfly and 4×100 metre freestyle relay, and a bronze medal in the 4×100 metre medley relay. In 2021, at the 2020 Summer Olympics, he placed 4th in the 100 metre butterfly, 4th in the 4×100 metre medley relay, 7th in the 4×100 metre freestyle relay, and 10th in the 100 metre freestyle. He also won two gold medals, one silver medal, and three bronze medals at the 2021 World Short Course Championships. In 2022, he won the NCAA title in the 100 yard butterfly.
Ahmed Ayoub Hafnaoui is a Tunisian swimmer. He is the African record holder in the short course 800-metre freestyle and 1500-metre freestyle. He competed in the 2020 Summer Olympics, where he won a gold medal in the men's 400-metre freestyle. He ranked No. 16 in the world and was the slowest qualifier for the final race but won Olympic gold with a time of 3:43.36. Hafnaoui was the only Tunisian to win Olympic gold at Tokyo 2020.
Daniil Dmitrievich Markov is a Russian competitive swimmer. He is a former world junior record holder in the 4×100 metre medley relay. At the 2018 Summer Youth Olympics he won three gold medals and three silver medals. He he also won a gold medal and a silver medal at different European Short Course Swimming Championships. At the 2018 European Junior Swimming Championships he won two gold medals and one bronze medal. He won one gold medal, one silver medal, and one bronze medal in freestyle relay events at the 2021 World Short Course Championships.
