2001 UBS Open – Singles

Àlex Corretja was the defending champion but lost in the semifinals to Jiří Novák.

Novák won in the final 6–1, 6–7(5–7), 7–5 against Juan Carlos Ferrero.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.


 * 1) 🇷🇺 Marat Safin (first round)
 * 2) 🇪🇸 Juan Carlos Ferrero (final)
 * 3) 🇫🇷 Sébastien Grosjean (semifinals)
 * 4) 🇪🇸 Àlex Corretja (semifinals)
 * 5)  Roger Federer (first round)
 * 6) 🇦🇷 Franco Squillari (quarterfinals)
 * 7) 🇦🇷 Guillermo Coria (first round)
 * 8) 🇲🇦 Hicham Arazi (first round)