Open water swimming at the World Championships is set to start a day late following two delays in Singapore because of "water quality levels exceeding acceptable thresholds."

Germany's Florian Wellbrock clinched gold in the men's 10km open water race, while Australia's Moesha Johnson secured the women's title at the World Aquatics Championships in Singapore on Wednesday, after both of the races were postponed because of poor water quality off Sentosa.

Germany's Florian Wellbrock won the men's open water 10km at the World Aquatics Championships in Singapore on Wednesday, after the race had been postponed for several hours because of poor water quality.