Last year's runner-up Zheng Qinwen was sent crashing out of the Australian Open second round after a shock 7-6(3) 6-3 defeat by unseeded German Laura Siegemund on Wednesday. Olympic champion Zheng looked out of sorts in the day's opening match on John Cain Arena,

Zheng Qinwen is out of the Australian Open after a shock defeat to Germany’s Laura Siegemund. Zheng, the No. 5 seed and last year’s beaten finalist, lost 7-6(3), 6-3 after her serve unraveled in the fourth game of the second set.

Rising star Qinwen Zheng lost in the second round to 36-year-old Laura Siegemund, ranked 97. How did the German unseat last year's finalist?