The 2017 season has been a breakout year for CoCo Vandeweghe, who, at 25, is making her Top 10 debut for the first time.
After ending the 2016 season at No. 37, the American made big runs in big tournaments throughout the year to steadily climb the ranks. She's joined in her Top 10 debut by fellow 25-year-old (and her Hopman Cup partner) Jack Sock.
For Vandeweghe, her rise started with the Australian Open, in which she knocked out defending champion Angelique Kerber in straight sets, and went on to stun Garbine Muguruza to make the semifinals.