"The swim was ok. There were a couple of things I could have done better. I was happy to get those times in the 50m, after the disappointment in the 100m (when he missed the semifinals finishing 18th overall).''
He returns to the pool for the 200m breaststroke tomorrow, an event that will test the sprint specialist.
World championship teenage rookies Bradlee Ashby and Bobbi Gichard took on some of the sport's superstars.
Waikato's Ashby faced defending world champion American Ryan Lochte in his heat of the 200m individual medley and clocked 2min 02.96s to be 25th fastest.
Hawkes Bay's Gichard clocked a personal best 29.15s in her least favoured event, the 50m backstroke to be 29th fastest.
Corey Main is in the pool tomorrow in his favoured 200m backstroke.