Ashleigh Barty’s winning run at the Malaysian Open has come to an end with the Australian teen getting taught a tennis lesson by No.2 seed Anastasia Pavlyuchenkova.

Barty, 16, had no answers to the all round game of the world No.29 Russian, going down in the quarter-final 6-2 6-0.

But Barty will take plenty out of the tournament, her first WTA quarter-final appearance sure to give her a good rankings boost from her current position of No.199.

Meanwhile defending champion Hsieh Su Wei also lost in a quarter-final, going down 7-5 6-2 to American wildcard Bethanie Mattek-Sands.

The Taiwanese’s defeat, coupled with No.1 seed Caroline Wozniacki’s first-round loss on Wednesday, means no defending champion or top seed has ever won the Malaysian Open.

Mattek-Sands will now meet Pavlyuchenkova in a semi-final.

In other matches Japan’s Ayumi Morita edged closer to winning her first WTA title after beating Luksika Kumkhum of Thailand 6-7 (7-9) 6-4 6-1.

“I’m very happy to be in my fourth career semi-finals. I hope to continue doing my best and try to go further this time,” the fourth seed said.

Morita, who ranks 55 in the world and has played in the Malaysian Open since the inaugural event in 2011, will meet 127th-ranked Karolina Pliskova of the Czech Republic in Saturday’s semi-final.

Pliskova eliminated Austrian Patricia Mayr-Achleitner 7-5 6-1 to set-up the meeting with Morita.