Career
Castellan was a semi-finalist in the boy"s singles event at the 1980 French Open. Also that year he made the Orange Bowl final, which he lost to Joakim Nyström. He also represented his country at level, once, in 1982, when he lost a singles rubber to Hans-Dieter Beutel of West Germany.
Castellan made two Grand Prix quarter-finals in 1981, at the March del Plata Open and Chilean Open.
In the 1982 French Open he beat Frenchman Jérôme Potier in an opening round match which went to five sets. He was then eliminated by Andrés Gómez.
At the French Open two years later, Castellan defeated fellow qualifier Simon Youl, but again fell in the second round, this time to Harold Solomon, in four sets. He reached the quarter-finals at the Dutch Open in 1982 and Venice the following year.
When he returned to the Dutch Open in 1984 he had his best ever Grand Prix showing, making the semi-finals.
