Mirra Andreeva clenches her fistImage source, Getty Images
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Mirra Andreeva won the Indian Wells title - part of the WTA Tour - last year

ByAmy LofthouseBBC Sport Senior Journalist

Mirra Andreeva says she surprised herself with her nerveless performance after beating Jessica Pegula to become the youngest player for 22 years to reach the WTA Finals showpiece.

French Open champion Andreeva came back from a break down in both sets to win 6-3 6-4 in Indian Wells, California.

The 19-year-old Russian is the youngest finalist at the season-ending event since Maria Sharapova, who was 17 when she won the title in 2004.