Auckland: Teen prodigy Coco Gauff was knocked out of the WTA Auckland Classic Thursday when she was outsmarted by German Laura Siegemund in the second round. The promoters' hopes of a dream quarter-final between Gauff and the queen of the court Serena Williams fell apart when Siegemund fought back from a set down to triumph 5-7, 6-2, 6-3. The 31-year-old Siegemund, who played her first WTA qualifier in 2003 before Gauff was born, was up 5-4 when she dropped her serve twice to lose the first set.

But from there, she used her considerable experience to ruffle the 15-year-old, forcing her behind the baseline and then drawing her forward with deft drop shots. "In the first set I had my chances but let it go. So I just tried to keep my level and she started to miss a little bit more, and I guess I just got better and better," Siegemund said.