Unseeded Katie Boulter wins San Diego Open by topping sixth-seeded Marta Kostyuk
SAN DIEGO (AP) — Unseeded Katie Boulter of England capped a run of upsets to win the San Diego Open singles title with a 5-7, 6-2, 6-2 victory over sixth-seeded Marta Kostyuk of Ukraine on Sunday. A 10-year tour veteran, the 27-year-old Boulter won her second pro singles title with