American Peter Marshall set his 2nd world record in two days, beating Bal’s 23.07 and Hurley’s 23.36 with a time of 23.05 in the 50 meter short course backstroke, where Hurley’s world record was 23.24. And Theresa Alshammar beat the 50 meter butterfly world record with one hundredth of a second, swimming 25.31 where Galvez’s record was 25.32. Read SwimInfo here and here