Mark Spitz's 1972 world record in the 200-meter freestyle has been surpassed by Australian female swimmers Ariarne Titmus and Mollie O'Callaghan.

They achieved this feat at the Aussie Olympic trials last month, with times of 1:52.23 and 1:52.48, respectively.

What happened?

The two swimmers broke the invisible barrier, becoming the first women to swim faster than Mark Spitz's personal-best time of 1:52.78.

This achievement is a testament to the evolution of Olympic swimming, with athletes continually pushing the boundaries of human performance.

Ariarne Titmus, known as the "Terminator" of world records, and Mollie O'Callaghan, a 20-year-old rising star, have set the stage for the 2024 Olympics.

Why it matters for Mark Spitz

Mark Spitz, an Olympic legend, won seven gold medals at the 1972 Games in Munich, setting world records in all seven events.

His records have stood the test of time, with many considering them unbreakable.

However, the progress of the sport has been continuous, with technical improvements, technology, and rule changes contributing to faster times.

What comes next?

The comparisons between contemporary women's times and historical men's times provide a fascinating insight into the progression of the sport.

As Rowdy Gaines, Olympic champ and longtime voice of swimming, noted, "Maybe it's not so shocking at all, because that's the natural progression of the sport."

The "supersuit" era, which saw the introduction of buoyant full-body racing suits, also played a significant role in accelerating the sport.

These suits helped dozens of swimmers smash and lower world records between 2006 and 2009.

But after the suits were banned, the spate of world record-setting swims paused, and it hasn't fully resumed in some events.

And the sport has continued to evolve, with swimmers like Janet Evans and Katie Ledecky breaking records in the 800 and 1,500 freestyle events.

By the late 1980s, Janet Evans had out-swum the men's 1972 times in both events, and by 2016, Katie Ledecky was 19 seconds faster in the 800 and 32 seconds better in the 1,500.

So the achievement of Ariarne Titmus and Mollie O'Callaghan is not an isolated incident, but rather part of a larger trend in the sport.

As the 2024 Olympics approach, it will be exciting to see how these athletes perform on the world stage.

With their record-breaking times, they have set the bar high for themselves and their competitors.

But for now, they can bask in the glory of having surpassed a legend like Mark Spitz.