Japan’s Naomi Osaka won the debut set of the Australian Open women’s final 7-6 (7/2) against Czech star Petra Kvitova as she attempts to claim back-to-back Grand Slam titles.

There was little between them in the tense 51 minute set.

When Kvitova saved two set points at 5-6 it went to a tiebreak, with Osaka racing through it to take the upper hand.