Retired professional tennis player who is recognized for having had a unique serving method. In 2001, he reached the quarter finals of the US Open tournament and held a career high singles rank of 21st worldwide.
He was the number 1 ranked junior singles player in 1995.
He hosted a tennis based sports program on ESPN.
He had a son named Fermín Zabaleta.
He lost to Andre Agassi during the 2000 Australian Open.