Stakusic fights off 4 match points to upset top-seeded Ostapenko at the Guadalajara Open

GUADALAJARA, Mexico (AP) — Teenager Marina Stakusic fought off four match points to claim the biggest win in her career after defeating top-seeded Jelena Ostapenko 6-3, 5-7, 7-6 (0) on Thursday to advance to the Guadalajara Open quarterfinals.