2001 AAPT Championships – Singles

The tournament was played between January 1 and January 7, 2001. Lleyton Hewitt was the defending champion but lost in the quarterfinals to Tommy Haas.

Haas won in the final 6–3, 6–1 against Nicolás Massú.

Seeds
• # 🇦🇺 Lleyton Hewitt (quarterfinals)

• # 🇬🇧 Tim Henman (semifinals)

• # 🇫🇷 Arnaud Clément (second round)

• # 🇫🇷 Sébastien Grosjean (first round)

• # 🇩🇪 Tommy Haas (champion)

• # Andrei Pavel (second round)

• # 🇸🇪 Thomas Johansson (quarterfinals)

• # 🇦🇺 Andrew Ilie (first round)

Seeds
• # n/a

• # 🇧🇪 Xavier Malisse (Qualifier)

• # 🇮🇹 Cristiano Caratti (second round)

• # 🇺🇸 Bob Bryan (second round)

• # 🇫🇷 Michaël Llodra (second round)

• # 🇮🇹 Stefano Tarallo (first round)

• # 🇦🇹 Werner Eschauer (second round)

• # 🇪🇸 Julián Alonso (first round)

Qualifiers
• # 🇩🇪 Björn Phau

• # 🇧🇪 Xavier Malisse

• # 🇦🇺 Alun Jones

• # 🇩🇪 Michael Kohlmann