Australian Open champion Madison Keys was undone by 89 unforced errors and was upset in the first round of the U.S. Open by Mexico’s Renata Zarazua on Monday.

Zarazua knocked off Australian Open champion Madison Keys, who committed 89 unforced errors and was upset 6-7 (10), 7-6 (3), 7-5 in a first-round match.

World No. 6 Madison Keys was eliminated in the first round of the 2025 U.S. Open by unranked Renata Zarazúa in a three-set thriller at Arthur Ashe Stadium.