LONDON – Mirra Andreeva rose to a career-best No. 9 in the tennis rankings on Monday, making the Russian the first 17-year-old in the WTA's Top 10 since Nicole Vaidisova in 2007.

Madison Keys has risen in the WTA rankings, joining Coco Gauff and Jessica Pegula in the top five. This is a remarkable achievement, as it's been more than 20 years since three American women were ...