Thomas Fraser Holmes tweeted to Brittany Elmslie after heats: let's go. 157 britta.  The 18-year-old London 2012 relay gold medallist duly delivered with a 1:57.71 in the 17-18s 200m freestyle at Queensland titles in Brisbane a day after a 1:58.34 win in the open. 

The youth victory was just shy of Elmsie's best of 1:57.24, set at Olympic trials in March, but comes at a time when, in her words, she "found some speed" without taper. She kept at bay Emma McKeon (1:59.10)

Elmslie's training partner at Nudgee Brothers, Emily Seebohm took the 200m medley in 2:14.19 and clocked 2:11.52 for second in the 200m backstroke behind Commonwealth champion Meagen Nay, on 2:09.78.

Jayden Hadler's 2:02.44 in the 200m medley was a class apart, while another of Australia's young up-an-comers, St Peters Western's Mitch Larkin clocked 2:01.23 in the 200m backstroke to pip Chinese visitor Diao Jigong (2:01.87).

The 200m butterfly went to Samantha Hamill in 2:12.38, the men's equivalent to Southport's Chris Wright in 1:58.85 ahead of Kiwi visitor Shaun Burnett, on 2:00.28 and Matthew Briggs, on 2:00.74.