2004 Mercedes-Benz Cup – Singles

Wayne Ferreira was the defending champion, but lost in the first round this year.

Tommy Haas won the tournament, beating Nicolas Kiefer in the final, 7–6(8–6), 6–4.

Seeds
• # 🇺🇸 Andre Agassi (quarterfinals)

• # 🇹🇭 Paradorn Srichaphan (second round)

• # 🇺🇸 Mardy Fish (quarterfinals)

• # 🇸🇰 Dominik Hrbatý (first round)

• # Sjeng Schalken (second round)

• # 🇺🇸 Vincent Spadea (first round)

• # 🇺🇸 Taylor Dent (first round)

• # 🇺🇸 Robby Ginepri (first round)