ASB Classic Top seed Caroline Wozniacki has fought off a poor spell midway through the match, to fend off the challenge of lucky loser German Laura Siegemund.
Siegemund lost in the final round of qualifying on Sunday, but after the withdrawal of Jana Capelova, she found her way into the main draw and a clash with the world number two.
Danish star Wozniackic coasted through the first set, breaking Siegemund’s serve twice to win 6-3.
But the German fought her way back into the contest early in the second set, breaking the Australian Open champion, frustrating Wozniacki.
But with the composure warranted of one of the best players in the world, crowd favourite Wozniacki re-established her dominance and ran away with the set and the match.
The win secures Wozniacki a second round date with qualifier Bianca Andreescu on Thursday.
Meanwhile seventh seed Kirsten Flipkens was ousted by Spain’s Sara Sorribes in second round action – Sorribes the first player to book a spot in the quarter finals.
Later on Wednesday one of the tournaments biggest draw cards Eugenie Bouchard will play Bibiane Schoofs for a place in the last eight.