Anastasia Potapova upsets top-seeded Anett Kontaveit at Prague Open

PRAGUE (AP) — Anastasia Potapova upset top-seeded Anett Kontaveit 6-1, 6-1 on Friday to reach her third straight WTA semifinal.

Seventh-seeded Potapova beat Kontaveit for the first time after two losses, including last week’s semifinal match at Hamburg. Potapova also reached the last four at Lausanne.

The Russian-born Potapova broke the…