<p>Australia broke the world record in the women's 4x200m freestyle relay at the Commonwealth Games in Birmingham on Sunday.</p>.<p>The team of Madison Wilson, Kiah Melverton, Mollie O'Callaghan and Ariarne Titmus powered home in 7min 39.29sec to beat China's previous mark of 7:40.33.</p>
<p>Australia broke the world record in the women's 4x200m freestyle relay at the Commonwealth Games in Birmingham on Sunday.</p>.<p>The team of Madison Wilson, Kiah Melverton, Mollie O'Callaghan and Ariarne Titmus powered home in 7min 39.29sec to beat China's previous mark of 7:40.33.</p>