World No. 4 Agnieszka Radwanska of Poland swept past former champion Greta Arn 6-2, 6-2 on Tuesday to reach the second round of the ASB Classic.
The 23-year-old Radwanska took just over 70 minutes to overcome Arn, the 2011 champion now ranked 114, who entered the main draw as a lucky loser after being beaten in the last round of qualifying.
Radwanska controlled the match from the baseline, with occasional forays to the net, unsettling Arn with her strong forehand and off-balance backhand.
Arn was the second former champion to lose in the first round after 2012 champ Zheng Jie of China was beaten in straight sets on Monday.