"This is the race we kept her for," Wigley said. "She would have been turned out before this if it wasn't a stakes race."
Zigwig was put aside after a debut placing in the summer and a fortnight ago she finished a creditable third on her return on the course after racing five wide in a 17-horse field.
"Jacob Lowry got off her and said she was still six months away from her best," Wigley said. "I think she's going to be a real Guineas horse in the spring."
With senior jockey Terry Moseley aboard, Zigwig raced kindly within touch of the pace and when she was asked for a serious effort in the straight the juvenile quickly put a margin on the field.
She coasted over the closing 200 metres to have three and a half lengths to spare at the post on Disturbance, who made ground strongly, with Shirley Maude third ahead of Cobblertothestars.
The favourite What Choux Want was in front early in the run home before wilting to finish fifth.
- NZ Racing Desk