Wollongong's Emma McKeon has the Campbell sisters in her sights at the world swimming championship trials in Brisbane.
McKeon will be chasing her third gold of the meet today when she lines up against Cate and Bronte in the 100 freestyle.
Former world record holder Cate Campbell is favourite for the event but McKeon is in form after taking out the 200 freestyle and 100 butterfly.
McKeon clocked a personal best time, and fastest 200 since 2016 to move up to second on the world rankings.
After over coming a shoulder problem McKeon said she feels great.
"This block is probably the best I have felt since the worlds at 2017.
"I am really happy with my training, I am a lot stronger.
"In the 100 free I think my strength will show there," McKeon said.
Image: AAP Image David Mariuz