Ashleigh Barty has continued her giantkilling at the Sydney International with a thrilling three-set semi-final win over big-hitting world No.9 Kiki Bertens.

Barty rallied from a set down to beat Bertens 6-7 (4-7) 6-4 7-5 to advance to her second successive final in Sydney.

The Australian No.1 will play either Czech fifth seed Petra Kvitova or Serbian qualifier Aliaksandra Sasnovich in Saturday’s final, hoping to complete the perfect lead-up for next week’s Australian Open in Melbourne.