Freestyler Kyle Chalmers entered a butterfly race for the first time at the Australian swimming championships as "a bit of fun".
Now, he's a national champion in the stroke after winning the 100m title in Adelaide on Sunday night.
"I stuck my head down and tried to swim similar to how I swim freestyle races – come home strong," he said.
"It's a bit more challenging doing butterfly though."
He clocked a personal best of 52.16 seconds – almost half a second quicker than his 100m 'fly time at the NSW state titles three weeks ago.
Chalmers' victory came after he trained twice on Sunday before a night final he found surprisingly comfortable.
"It wasn't actually to painful, to be honest with you," he said.
"I have been doing so much freestyle that I'm probably pretty fatigued in those muscles at the moment.
"So to change it up … I haven't done a lot of butterfly, so it was pretty good."
Chalmers, the 2016 Olympic 100m freestyle champion, swam butterfly as a junior.
"Up until 2014, I did a fair bit of butterfly buRead More – Source