Aaron Peirsol fails to qualify for the final of the 100 meters backstroke in Rome . Rice was second , matching the American 's record from Sunday , with Hosszu in third . Hide Caption 1 of 11 Photos:Photos: Teenager Sarah Sjostrom sets second 100m butterfly world record in 24 hours .
Aaron Peirsol fails to qualify for the final of the 100 meters backstroke in Rome . Hide Caption 1 of 11 Photos:Photos: Teenager Sarah Sjostrom sets second 100m butterfly world record in 24 hours .