Ariarne Titmus' master plan is coming together perfectly.
Titmus is plotting to win her second gold medal of the world championships in Fukuoka, Japan, on Wednesday night.
She recaptured her 400 metres freestyle world record in winning on the opening night.
And now Titmus has snared the coveted lane four in Wednesday night's 200m freestyle final - a key goal in her tactics.
"I just think it's a nicer feeling being in the middle when you're racing, you can see what is going on more," Titmus said after Tuesday night's semi-finals.
"I just had to try and practice a few things that I want to do (Wednesday night), try and conserve as much as I could and get the job done as easy as possible.
"And I feel like I did that."
Titmus topped times in the semis, clocking one minute 54.64 seconds.
Summer McIntosh (1:54.67) was second-quickest - the Canadian lost her 400m freestyle world record to Titmus on Sunday night.
And Titmus' teammate Mollie O'Callaghan (1:54.91) was third-fastest into medal race with the trio set to challenge the longest-standing world record in women's swimming.
The benchmark in the event, 1:52.98, was set by Italian Federica Pellegrini in the supersuit era in 2009.
O'Callaghan owns the fastest time in the event this year, 1:53.83 in June, while Titmus posted the second-quickest time ever, 1:53.09, in 2021.
Australian Sam Short, like Titmus, will on Wednesday night race for his second gold medal of the world titles.
The 400m freestyle champion, Short was fastest qualifier for the men's 800m final while compatriot Sam Williamson is in lane eight in the men's 50m breaststroke final after qualifying for the final by one-hundredth of a second.
And Kyle Chalmers will begin his quest in the 100m freestyle, with heats and semi-finals to be contested on Wednesday.
