Her 27-year-old opponent followed up her own upset win over world No. 2 Caroline Wozniacki on Wednesday by reaching her third WTA Tour final.

CNN: STORY HIGHLIGHTS

At the age of just 14, she has made a brilliant start to her first junior Grand Slam, stunning 18-year-old world number seven Gabriela Dabrowski in the first round before fighting her way past 17-year-old Ksenia Kirillova the second round.

BBC: British juniors shine at Wimbledon

Another young American, 17-year-old Tatyana McFadden, beat her world record in the 100m.

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