The more I think about it, the more Justine Henin-Hardenne and Juan Carlos Ferrero are similiar. They both are pretty small compared to other players in their tour so they are both very quick and cover the court well to play excellent defense. They are both French Open Champions this year and their best surface is on clay (although Henin-Hardenne is an all court player and Ferrero got to the US Open finals). Both Justine and Juan Carlos are mentally tough, don't show a whole lot of emotion and stay clam during matches. Also, both of thier mothers passed away when they were young.