Keys eases through to semis
American teenager Madison Keys reached her first WTA Tour semi-final at the Japan Open in Osaka.
The 18-year-old has had a breakthrough season, making the third round at both the Australian Open and Wimbledon.
She was playing in her fourth quarter-final of the year and this time she came out on the winning side - emphatically so as she brushed aside China's Zheng Jie 6-3 6-1.
Having started the year ranked 149th, Keys looks set to finish it well inside the top 40 and could be seeded at the Australian Open in January.
In the last four here she will play third seed Sam Stosur, who was made to work much harder before overcoming home hope Misaki Doi 6-1 3-6 6-3.
Another teenager rocketing up the rankings is Canada's Eugenie Bouchard, and she continued her fine run of form with a 2-6 6-4 6-1 victory over Barbora Zahlavova Strycova.
The 19-year-old, ranked 35th in the world, is in prime position to reach her first WTA Tour singles final, with Japanese wild card Kurumi Nara next up following her 7-6 (7/4) 2-6 6-1 win over Polona Hercog.