In the face of tennis' reluctance to act on allegations of domestic violence, Nina's stand at the men's Australian Open final was both courageous and important, writes Kate O'Halloran.

World No. 2 Alexander Zverev was forced to address previous domestic abuse allegations made against him after he was heckled by a member of the crowd after the Australian Open final on Sunday.

Australian Open chief Craig Tiley has revealed the woman who heckled Alexander Zverev after he lost the Australian Open final was removed from the grounds following her intervention. An emotional Zverev was preparing to make a concession speech to the packed crowd after he was well beaten by world No 1 Jannik Sinner in a one-sided final.