Jessica Adele Hardy Meichtry is an American competitive swimmer who specializes in breaststroke and freestyle events. Hardy earned a bronze medal in the 4×100-meter freestyle and a gold medal in the 4×100-meter medley relays at the 2012 Summer Olympics.
This article includes the world record progression for the 4×100 metres freestyle relay, and it shows the chronological history of world record times in that competitive swimming event. The 4×100 metres freestyle relay is a relay event in which each of four swimmers on a team swims a 100-metre freestyle leg in sequence. The world records are recognized by and maintained by FINA, the international competitive swimming and aquatics federation that overseas the sport in international competition.
James Magnussen is a retired Australian swimmer and Olympic medallist. He was the 2011 and 2013 100-metre freestyle world champion, and holds the record for the fifth fastest swim in history in the 100-metre freestyle, with a time of 47.10, which until 2016 also stood as the fastest swim in textile swimwear material.
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.
Daynara Lopes Ferreira de Paula is a Brazilian butterfly swimmer.
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 4 × 100 metre freestyle relay event at the 11th FINA World Swimming Championships (25m) took place 12 December 2012 at the Sinan Erdem Dome.
The women's 4x200 metre freestyle relay event at the 11th FINA World Swimming Championships (25m) took place 12 December 2012 at the Sinan Erdem Dome.
The men's 4x200 metre freestyle relay event at the 11th FINA World Swimming Championships (25m) took place 13 December 2012 at the Sinan Erdem Dome.
The women's 4x100 metre medley relay event at the 11th FINA World Swimming Championships (25m) took place 14 December 2012 at the Sinan Erdem Dome.
The men's 4×100 metre medley relay event at the 11th FINA World Swimming Championships (25m) took place 16 December 2012 at the Sinan Erdem Dome.
The women's 50 metre freestyle event at the 11th FINA World Swimming Championships (25m) took place 15 – 16 December 2012 at the Sinan Erdem Dome.
Megan Romano is an American competition swimmer who specializes in backstroke and freestyle events. She is part of the current American record women's 4x100-meter freestyle relay team, and is the short-course yards American record-holder in the 200-yard freestyle and 4x200-meter freestyle relay. Along with her Georgia Bulldogs teammates, she won the NCAA Division I women's team championship in 2013.
Etiene Pires de Medeiros is a Brazilian competitive swimmer who participates in backstroke and freestyle events. Widely regarded as the best Brazilian woman swimmer of all time, Medeiros was the first Brazilian to win an individual gold medal in a World Championship and Pan American Games, and the first to be a world record-holder in the modern era
Alessandra Christine Harrison Marchioro is a freestyle swimmer from Brazil.
Larissa Martins de Oliveira is a Brazilian freestyle swimmer.
Abbigail "Abbey" Weitzeil is an American competition swimmer specializing in sprint freestyle. A multiple time Olympic medalist, she won a gold medal in the 4x100-meter medley relay for swimming in the preliminary heats and a silver medal in the 4x100-meter freestyle relay at the 2016 Rio Olympics. At the 2020 Summer Olympics she won a silver medal in the 4x100-meter medley relay and a bronze medal in the 4x100-meter freestyle relay, swimming in the final of both events. She is the American record holder in the 50-yard freestyle and is part of the American Record in the 4x100-meter freestyle relay.
Alessandro Miressi is an Italian swimmer. He is a world record holder in the short course 4×100 metre freestyle relay and an Italian record holder in the long course and short course 100 metre freestyle. In the long course 100 metre freestyle, he was 2018 European champion, 2020 European Championships silver medalist, and 2022 European Championships bronze medalist. In the short course 100 metre freestyle, he was 2021 World champion, 2019 and 2021 European Championships silver medalist, and 2022 World Championships bronze medalist.
Zachary "Zach" Douglas Apple is a retired American competitive swimmer who specialized in the sprint freestyle events. He used to swim for DC Trident in the International Swimming League. He won his first Olympic gold medal in the 4x100-meter freestyle relay at the 2020 Summer Olympics, swimming in the prelims and the final of the event, and later in the same Olympic Games won a gold medal and helped set a new world record and Olympic record in the 4x100-meter medley relay, swimming the freestyle leg of the relay in the final.
