Sánchez Vicario started playing tennis at the age of four, when she followed her older brothers Emilio Sánchez and Javier Sánchez (both of whom became professional players) to the court and hit balls against the wall with her first racquet. As a 17-year-old, she became the youngest winner of the women's singles title at the 1989 French Open, defeating World No. 1 Steffi Graf in the final. (Monica Seles broke the record the following year when she won the title at age 16.) Sánchez Vicario was also a member of the Spanish teams that won the Hopman Cup in 1990 and 2002.