The 19-year-old showcased her prowess within the pool, delivering a powerful end to efficiently defend her 100m title.
She touched the wall in a formidable time of 52.16 seconds, outpacing Siobhan Haughey of Hong Kong (52.49) and Marrit Steenbergen from the Netherlands (52.71).
Earlier within the week, O’Callaghan had already secured the 200m title, setting a world report within the course of, and beating her teammate Ariarne Titmus.
Though she got here into the championships with the straightforward intention of getting enjoyable, O’Callaghan’s distinctive performances have reworked her right into a history-maker. With two particular person world titles to her title, she has etched her title within the annals of swimming greatness.
O’Callaghan’s double victory within the 100m and 200m freestyle occasions marks a outstanding milestone in her profession, and her title can be eternally remembered within the sport’s report books.
“I am not going to lie, it is such a bizarre feeling,” she stated.
“I did not even know that no girl had performed that and to be the primary is simply unimaginable.
“There are not any phrases to elucidate it — I am simply so thrilled,” she added.
It was O’Callaghan’s fourth gold of the competitors, having additionally been a part of Australia’s title-winning girls’s 4x100m and 4x200m freestyle relay groups.
Each of these titles have been received in world report instances.
O’Callaghan stated that her teammates had made the expertise “a lot simpler”.
“Going into earlier meets, I used to be simply so nervous on a regular basis and worrying,” she stated.
“That is the primary time that I’ve truly felt fairly calm and simply been having fun with each little bit.”
Emma McKeon, the 100m freestyle Olympic champion, completed fifth in a time of 52.83.
O’Callaghan edged McKeon on the Australian trials final month, coming dwelling within the quickest time of the yr.
It was the second time in as many races that {the teenager} had taken down her extra illustrious teammate, having additionally overwhelmed her in April.
“I am simply making an attempt to maintain my feelings intact and hold it managed in the mean time,” stated O’Callaghan.
“I am simply taking it daily and I have not actually considered every little thing.”
Second-place Haughey additionally received silver within the occasion on the Tokyo Olympics.
(With AFP inputs)