Australia’s Brenton Rickard set a new world record in the 100 breaststroke, with a time of 58.58 where Kosuke Kitajima’s world record was 58.91. Sweden’s Sarah Sjostrøm set a new world record in the 100 breaststroke, with a time of 56.05 where her world record from the semifinal was 56.44. USA’s Rebecca Soni set a new 100 meter breaststroke world record, with a time of 1:04.87 where ‘Lethal’ Leisel Jones’ world record was 1:05.09. Russia’s Anastasia Zueva set a new 100 backstroke world record, with a time of 58.48 where Kirsty Coventry’s world record was58.77. And in the women’s 200 individual medley, USA’s Ariana Kukors improved on her world record from the semifinal, from 2:07.03 to 2:06.15.

Sweden’s Sarah Sjöström set a new world record in the 100 long course butterfly, with a time of 56.44 where Inge de Bruijn’s world record was 56.61. Germany’s Paul Biedermann set a new world record in the 400 freestyle, with a time of 3:40.07 where Ian Thorpe’s world record was 3:40.08. USA’s Ariana Kurors set a new 200 individuel medley world record, with a time of 2:07.03 where Stephanie Rice’s world record was 2:08.45. Italia’s Federica Pellegrini became the first woman even undir 4 minutes in the 400 freestyle, with a time of 3:59.15 where her own world record was 4:00.41. Netherland bettered their own world record in the womens 4×100 frí, from 3:33.62 to 3:31.72. And Germany’s Britta Steffen set a new world record in the 100 freestyle, as first swimmer in the 4×100 relay, with a time of 52.22 where her own world record was 52.56.