Coco Gauff extended her New Zealand win streak to claim a spot in the semi-finals of the WTA Auckland event on Friday with a 6-1, 6-1 thumping of Varvara Gracheva of France.
The teenaged US Open champion has now won her last eight in the island nation without the loss of a set.
“I thought I served really well, probably the best so far this tournament,” Gauff said, “which was something I was working really hard on in the off-season.”
Gauff will next face compatriot and No.4 seed Emma Navarro after the American beat Petra Martic 6-4, 6-3.
The winner moved through by winning the last three games, ending with 13 winners and 11 unforced errors without facing a break point.
