A historic win happened on Sunday when 17-year-old Olga Danilovic captured her first WTA singles title at the Moscow River Cup. She defeated fellow 17-year-old Anastasia Potapova, 7-5, 6-7(1), 6-4.

Danilovic has won four singles titles and one doubles title on the ITF tour before making history on the WTA Tour. Despite letting a championship point slip away in the second set, she became the first lucky loser, and the the first player born in the 2000s, to win a WTA title.

The teens were meeting for the first time on the pro tour but have played both with and against each other on the junior circuit. They won Roland Garros and the Orange Bowl in 2016. 

Thanks to her big week in Russia, Danilovic has hit a career-high ranking of world No. 112.