ASB Classic tournament director Karl Budge says he never had any doubts they could secure a headline act for next year's tournament because of the niche role the Auckland event fills.
World No 4 Agnieszka Radwanska was unveiled yesterday as the major drawcard for the tournament.
The 23-year-old Polish right-hander made the final of Wimbledon this year, where she was beaten in three sets by Serena Williams, and has career earnings so far of more than US$10 million ($12.2 million).
The ASB Classic runs from December 31 until January 5 and is a popular build-up for players ahead of next year's first Grand Slam, the Australian Open, in Melbourne from January 14.
Players are spoilt for choice next season with a new indoor event in China running at the same time as the ASB Classic and a higher-tier event in Brisbane.