He began at the age of seven years with the tennis and 1991 European junior champion. In the same year he became a professional tennis player, winning two years later in São Paulo his first single title. In the early 1990s, he was able to establish itself as a clay court player in the world rankings.
The year 1994 was his best year as a tennis player. He reached nine finals and won seven of them. In the only Grand Slam final of his career, the final of the French Open, he faced his countryman Sergi Bruguera and lost in four sets. Its highest ranking in the world rankings was position 7 in November 1994.
Berasateguis trademark was his unconventional forehand, which he played with the same handle as the backhand.