Leisel Jones has broken her second swimming world record in a week in Melbourne at Australia's swimming trials for the Commonwealth Games.
Jones bettered the 100 meter breaststroke record Friday, with a time of one minute 5.71 seconds. That was nearly half a second faster than the old mark (1:06.20) set by American Jessica Hardy at last July's world championships in Montreal.
The 20-year-old Jones said her goal was to break the world record but she did not believe she could do it by such a wide margin. Earlier at this meet she broke her own 200 meter breaststroke world record.
It was the fourth world record of the week for Australian swimmers. Libby Lenton set the new mark in the 100 meter freestyle and Jade Edmistone broke the record in the 50 meter breaststroke.