China's Xu now world's No 1 junior

'Coco' Xu Shilin made tennis history on Tuesday when she officially moved atop the International Tennis Federation world junior rankings for girls' aged 18 and under, becoming the first Chinese player to have an ITF top junior world ranking.

The 16-year-old Xu catapulted to the top of the rankings from her No 3 spot by capturing the singles and doubles titles at last week's Osaka Mayor's Cup in Japan.

Xu, who hits two-handed forehand and backhand strokes, dropped only one set while dominating six opponents to win one of the world's most prestigious junior singles titles.