Men's 200m Freestyle
· Sun Yang (CHN) became the fourth man to win the 200m and 400m freestyle events at the same World Championships, after Tim Shaw (USA, 1975), Ian Thorpe (AUS, 2001 and 2003) and Paul Biedermann (GER, 2009).
· Sun claimed his sixth medal in the 200m and 400m freestyle events, surpassing Thorpe (5) and Biedermann (5) for second most among men behind Grant Hackett (AUS, 7).
· Sun has now won nine gold medals at the FINA World Championships, exceeding Wu Minxia (CHN, diving) for second most among Chinese athletes. Guo Jongjing (CHN, diving) holds the Chinese record with 10 gold medals.
· Townley Haas (USA) finished second and took his first individual medal at the World Championships. He was part of the US men's team that won the 4x100m freestyle relay earlier this week.
· Aleksandr Krasnykh (RUS) became the second Russian swimmer to bag a medal in the men's 200m freestyle at the World Championships, after Danila Izotov (RUS, bronze in 2009 and 2013).
Women's 1500m Freestyle
· Katie Ledecky (USA) won her 12th gold medal at the World Championships, surpassing Missy Franklin (USA, 11) for most by a woman. On the men's side, only Michael Phelps (USA, 26) and Ryan Lochte (USA, 18) have reached this number.
· Ledecky won a record third world title in the women's 1500m freestyle, surpassing Hannah Stockbauer (GER, 2001 and 2003) and Kate Ziegler (USA, 2005 and 2007).
· Mireia Belmonte (ESP, G0-S3-B1) equalled Martin López-Zubero (ESP, G2-S1-B1) on a record four World Championships medals among Spanish swimmers. It was her first medal in this event.
· Simona Quadarella (ITA) claimed bronze, her first World Championships medal. She is the second Italian woman to bag a medal in this event after Alessia Filippi's (ITA) world title in 2009.
· Quadarella's medal was the 50th medal for Italy in swimming at the FINA World Championships.
Women's 100m Backstroke
· Kylie Masse (CAN) became the first female Canadian swimmer to win an event at the FINA World Championships.
· Masse won the world title in a world record time (58.10). The women's 100m backstroke world record had not been improved since 28 July 2009. It was the longest standing world record time in women's swimming. That day, Gemma Spofforth (GBR) won the world title in Rome in 58.12.
· She is the first Canadian to hold the women's 100m backstroke world record since Wendy Hogg in 1974.
· Masse became the first Canadian swimmer to reach the podium of the women's 100m backstroke at the World Championships since Cheryl Gibson (CAN, bronze) in 1978. Nancy Garapick (CAN, bronze in 1975) and Hogg (bronze in 1973) also claimed a medal in this event representing Canada.
· Kathleen Baker (USA) finished second and claimed her first medal at the World Championships. She took silver in this event at the Rio 2016 Olympic Games.
· Emily Seebohm (AUS, G1-S1-B2) claimed her fourth medal in the women's 100m backstroke at the World Championships, equalling Natalie Coughlin (USA, G2-S0-B2) for most in this event.
Men's 100m Backstroke
· Xu Jiayu (CHN) won the world title and became the first Chinese man to claim a medal in one of the backstroke events at the World Championships.
· Xu is the third Asian swimmer to grab a medal in the men's 100m backstroke at the world championships, after Ryosuke Irie (JPN, bronze in 2011) and Junya Koga (JPN, gold in 2009).
· Matt Grevers (USA) finished second and claimed a record equalling third medal in the men's 100m backstroke at the World Championships, set by Aaron Peirsol (USA, three gold).
· Only Peirsol (G7-S1-B0) and Ryan Lochte (USA, G3-S1-B2) have claimed more World Championships medals in men's backstroke events than Grevers (G1-S3-B1).
· Ryan Murphy (USA) claimed his first individual medal at the World Championships with a third place. He was part of US men's team which won the world title in the 4x100m medley relay in 2015 and the mixed US team that took silver in the 4x100m medley relay in 2015.
Women's 100m Breaststroke
· Lilly King (USA) became the third woman to win the world title in this event as the reigning Olympic champion, after Ruta Meilutyte (LTU) in 2013 and Ute Geweniger (GDR) in 1982.
· King won the world title in a world record time (1:04.13), improving the time set by Meilutyte in 2013 by 22 seconds. She is the first US woman to hold the world record in this event since Jessica Hardy in 2009.
· It was King's first ever medal at the World Championships.
· Katie Meili (USA) claimed her first World Championships medal with her second place in this event.
· Two US women have reached the World Championships podium in this event for the first time since 2009 when Rebecca Soni (USA) finished first and Kasey Carlson (USA) third.
· For the first time both the gold and silver medals in a women's breaststroke event were won by American swimmers.
· Yuliya Efimova (RUS) finished third and claimed her fourth medal in this event at the World Championships (G1-S2-B1). Only Leisel Jones (AUS, G2-S2-B1) has bagged more.
· Efimova claimed her 10th medal in breaststroke events at the World Championships, surpassing Jones (9) and Cameron van der Burgh (RSA, 9) for most among men and women.