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.

MELBOURNE, Australia — Jannik Sinner beat Alexander Zverev 6-3, 7-6 (4), 6-3 in the Australian Open final at Melbourne Park Sunday. The No. 1 seed prevailed over the No. 2 seed in a match ultimately decided by Zverev’s discomfort when coming forward, Sinner’s underrated first serve, and a kiss of death from the net.

Moments after Alexander Zverev’s loss in the Australian Open final, a person in the stadium yelled out the names of two of the tennis star’s ex-girlfriends who have accused him of physical abuse

World No. 1 Jannik Sinner defended his Australian Open title on Sunday, comfortably defeating Alexander Zverev 6-3, 7-6(4), 6-3 in the men’s final to secure his third career grand slam win.

Alexander Zverev is heckled over domestic abuse allegations during the trophy ceremony after the Australian Open men's singles final.

Alexander Zverev says he is feeling down and emotional after once again coming within one win of earning his first Grand Slam title.

The 27-year-old German waited for the commotion to die down - the woman was removed by security - and made no reference to the protest in his speech.

Alexander Zverev was heckled during Sunday's Australian Open trophy presentation over historic allegations of domestic violence.

Alexander Zverev was heckled by a member of the Australian Open crowd in Melbourne as he prepared to make his speech following a defeat against Jannik Sinner in a one-sided final. Zverev’s despair as he lost his third Grand Slam final was evident as he sat down in his chair after congratulating Sinner,