Radwanska furious with Hsieh's moth compassion

Taiwanese veteran Hsieh Su-wei has reached the second week of the Australian Open but her compassion for insects put her offside with beaten opponent Agnieszka Radwanska.

Hsieh defeated the former world No.2 in a fascinating match that finished 6-2 7-5 after an hour and 39 minutes on Margaret Court Arena last night.

The 32-year-old's victory matched her best grand slam result as a singles player, having reached the fourth round at a major only once before -- 10 years ago at the 2008 Australian Open.

The players produced incredible tennis that featured some lengthy rallies to wow fans:

But the match featured a number of Radwanska blow-ups, with none more bizarre than when Hsieh became a little too interested in saving moths.

At one point Hsieh interrupted her opponent's serving motion to taxi a moth to the end of the court with her racquet.

The chair umpire was eventually forced to stop a ball boy from helping Hsieh move the moths.

Radwanska had had enough and protested the delay: "They're everywhere!"

Radwanska, who dealt with a knee injury in the second set, will have been disappointed by the loss but perhaps grateful to get off the court.

Moths were joined by the umpire in irritating the 28-year-old.

A point early in the second set needed to be replayed after the umpire conceded he didn't "have the memory of what happened" and didn't see the end of the point.

Radwanska was beside herself at his explanation, asking why she was being punished over his error in a game she would go on to lose to love.

Hsieh will face former world No.1 Angelique Kerber on Rod Laver Arena after the German defeated Maria Sharapova on Saturday night.

"I come back to the big court again!" said an excited Hsieh when told of her looming opponent.

But could she take a third big name scalp at Melbourne?

"I don't know, but I will try," she said.