DOHA, Qatar – On Tuesday evening, Angelique Kerber found out just how hard life is with a target on her back, slipping to a shock straight set defeat at the hands of Zheng Saisai in the second round of the Qatar Total Open.

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World No.73 Zheng made a mockery of her lowly ranking to stun the recently crowned Australian Open champion, 7-5, 6-1, in an hour and 20 minutes.

Zheng becomes only the fourth Chinese player in history to defeat one of the world’s Top 2. In the third round she will face Eugenie Bouchard.

“The feeling is amazing here today,” Zheng said. “Kerber was amazing at the Australian Open and a great champion. For sure it wasn’t her best tennis today, but I’m happy I won that match.”

An accomplished doubles player, Zheng utilized her all-court nous to take the match to Kerber, with 11 of her 17 winners coming at the net. “She’s unbelievable at running so the only way I could win the point sometimes was by coming to the net!”

Zheng complemented her positive tennis with a defensive performance that would have made Kerber proud, coughing up a miserly eight unforced errors.

The decisive moment in the opening set came in the 11th game, Zheng turning the screw with a miraculous stop volley to earn a break point. Kerber wilted under the pressure, hoicking a forehand into the tramlines in a vain attempt to breach the underdog’s defenses.

Confidence now coursing through her game, Zheng raced through the second set, breaking three more times to seal a famous victory.

Kerber, in her first outing on tour since triumphing Down Under, made 38 unforced errors throughout and admitted it was a bad day at the office.

“Actually I was practicing very well in the last few days. But today my practice this morning was not the best. So I was not feeling good from the beginning.

“I think you have sometimes days like this. Of course it’s sad that’s the first round here in Doha for me. Still, I mean, it was not my day. That’s all I can say.”