One of Zarazúa’s career highlights came in 2020 when she reached the semifinals of the Abierto Mexicano Telcel in Acapulco, becoming the first Mexican woman to reach this stage of a WTA event in over two decades. This breakthrough performance significantly boosted her profile and ranking. Zarazúa has also competed in Grand Slam tournaments, including the French Open, where she reached the second round in 2020, further establishing her presence on the international stage.