2001 Citrix Tennis Championships – Singles

Stefan Koubek was the defending champion but lost in the first round to Carlos Moyá.

Jan-Michael Gambill won in the final 7–5, 6–4 against Xavier Malisse.

Seeds

 * 1) 🇦🇺 Patrick Rafter (quarterfinals)
 * 2) 🇪🇨 Nicolás Lapentti (second round)
 * 3) 🇪🇸 Carlos Moyá (second round)
 * 4) 🇺🇸 Jan-Michael Gambill (champion)
 * 5) 🇦🇷 Gastón Gaudio (first round)
 * 6) 🇪🇸 Álex Calatrava (second round)
 * 7)  Byron Black (withdrew)
 * 8) 🇫🇷 Fabrice Santoro (quarterfinals)