Petra Kvitova and Naomi Osaka will go head to head at the Australian Open final.

Kvitova, seeded eighth, dominated a tie-break to win a tight first set, in which the roof was closed at 4-4 against Danielle Collins.
The two-time Wimbledon champion, 28, controlled the second as Collins, 25, grew frustrated.
Kvitova won 7-6 (7-2) 6-0 and will meet Naomi Osaka in Saturday’s final.
In another game, US Open champion Osaka defeated Karolina Pliskova 6-2 4-6 6-4 in the second-semi-final.

A vicious forehand winner sealed victory on Kvitova’s first match point as she reached her first Australian Open final.
“This means everything, that’s why I work really hard – to be in a final at a Grand Slam,” she said.
“Finally, I made it deep into a major. Whatever happens in the final I am very happy.”