Australia's Mollie O'Callaghan breaks her teammate, defending Olympic and World Champion Ariarne Titmus's Olympic record to win Gold in women's 200m freestyle. She stuns the world with the timing of 1:53.27.
🥇Mollie O'Callaghan 1:53.27
🥈 Ariarne Titmus 1:53.81
🥉Siobhán Haughey 1:54.55.