Kai-Chen Chang recorded the biggest win of her career when she defeated top seed Roberta Vinci in the opening round of the BMW Malaysia Open on Tuesday.
The Chinese Taipei player came back from a set down to defeated the world number ten 5-7, 6-2, 6-1 on the courts of the Kuala Lumpur Golf and Country Club.
Scores were locked at 5-5 in the opening set, but Vinci turned on the class to win the final two games and take a one set lead.
But that was as far as the 2015 US Open finalist would go as a sensational Chang would go on to break her three times to force a deciding set.
Two more breaks would see the world 151 wrap up the final set in just 26 minutes and book her place in the second round.
Meanwhile, second seed Elina Svitolina steamrolled Miyu Kato of Japan 6-1, 6-1 in a match lasting just 47 minutes.
In other results, Kazakstan's Zarina Diyas upset fourth seed Annika Beck of Germany 7-5, 6-3 while Zhaoxuan Yang knocked out eighth seed Saisai Zheng 4-6, 6-3, 6-2.