Mollie O’Callaghan and Zac Stubblety-Cook strike gold for Australia at swim worlds

• Wins take Australia's gold medal tally to four in Budapest
• Jenna Strauch and men's 4x200m freestyle team add more medals

Mollie O'Callaghan and Zac Stubblety-Cook made it another golden day for Australia at the world swimming championships in Budapest with supreme displays of brinkmanship.

O'Callaghan overcame a touch of pre-race panic to take the 100m freestyle with an extraordinary late burst on Thursday before Stubblety-Cook appeared to toy with his 200m breaststroke opponents to storm through and add the world title to the Olympic gold he won in the event last year.