USA set 5 short course world records on first day of the “Duel in the Pool” meet in Manchester, with 4 world records falling in the first 3 events, against an “E-stars” team comprising swimmers from Italy, Germany and Great Britain. First USA’s women set a new 4×100 medley world record, with a time of 3:47.87 where the world record of Canada from last August was 3:49.45. Then USA’s Nick Thomas set a 100 backstroke world record in the mens 4×100 medley, with a time of 48.94 where the world record of Russian Donets and Vyatchanin from last week was 48.97. With the American men also bettering the 4×100 medley world record, with a time of 3:20.71, where Canada’s world record from last August was 3:23.33. Then USA’s Julia Smith set a 400 meters individual medley world record, with a time of 4:21.04 where South African Kathryn Meaklim’s world record from the World Cup meet in Singapore in November was 4:22.88. And then USA’s Rebecca Soni set a 200 meter breaststroke world record, with a time of 2:14.57, here Australian Leisel Jones’ world record from the World Cup meet in Berlin last November was 2:15.42. Results can be found on www.omegatiming.com.

Brazil’s César Cielo Filho set a new 50 freestyle world record this morning, at the Brazilian Long Course Championships in Sao Paolo, with a time of 20.91, where France’s Frederick Bousquet’s world record from last April was 20.94. Read SwimmingWorld Magazine

Russia’s Stanislav Donets and Arkady Vyatchanin both won gold and set a new world record in the 100 backstroke final of the 2009 European Short Course Championships in Istanbul, with a time of 48.97, where Vyatchanin’s world record from the day before was 49.17.

Italy’s Federica Pellegrini improved upon her short course 200 freestyle world record, with a time of 1:51.17 at the 2009 European Short Course Championships in Istanbul, where her world record from the European Championships in Rijeka last year was 1:51.85.

Hungary’s Daniel Guyrta crushed the 200 meter short course breaststroke world record, on the 4th day of the 2009 European Short Course Championships in Istanbul, with a time of 2:00.67, where Australia’s Christian Sprenger’s world record was 2:01.98.

Croatia’s Sanja Jovanovic set a new 50 meter backstroke short course world record today, at the European Short Course Championships in Istanbul, with at time of 25.70, where China’s Zhao Jing’s world record from the World Cup meet in Stockholm last month was 25.82. Read SwimInfo

Frances’s Diane Bui Duyet set a new 100 meter butterfly short course world record today, at the European Short Course Championships semifinal in Istanbul, with at time of 55.05, where Australia’s Felicity Galvez’s world record from the World Cup meet in Stockholm last month was 55.46. Read SwimInfo

Russia’s Arkady Vyatchanin set a new 100 meter backstroke short course world record today, at the European Short Course Championships semifinal in Istanbul, with at time of 49.17, where Spain’s Aschwin Wildeboer Faber’s world record from last year was 49.20. Read SwimInfo

Slovenia’s Peter Mankoc set a new 100 meter short course individual world record today, at the European Short Course Championships semifinal in Istanbul, with a time of 50.76 where Russia’s Sergey Fesikov’s world record from the World Cup leg in Berlin last month was 50.95. Read SwimInfo

Hungary’s Laszlo Cseh improved upon his own 400 meter short course individual medley world record, yesterday at the Europan Short Course Championships in Istanbul, with at time of 3:57.27, where his world record from 2007 was 3:59.33. Read SwimInfo.com