Last year's beaten finalist Zheng Qinwen blamed the lack of a warm-up event and a serve clock violation for her shock Australian Open exit in straight sets to German veteran Laura Siegemund on Wednesday.

By Shrivathsa Sridhar MELBOURNE (Reuters) -Zheng Qinwen was the first big name to exit the women's draw at the Australian Open on Wednesday after the Olympic champion was stunned by Laura Siegemund while top seed Aryna Sabalenka made heavy weather of her second-round match before going through.

Zheng Qinwen admits it was not her day as she was beaten in the Australian Open second round in the biggest shock of the tournament so far.