Marleen Veldhuis (NED) cracked out a 25.28 world mark in the first semi of the 50m butterfly. Then Therese Alshammar (SWE) hits back with a 25.07 response, for the 33rd world record the championships.

Emerging from Melbourne 2007, just three women had even got past 26sec. Now there are 17, 11 of them from today.

Enough of that.