2003 Swisscom Challenge – Singles

Justine Henin-Hardenne defeated Jelena Dokic in the final, 6–0, 6–4 to win the singles tennis title at the 2003 Swisscom Challenge. With the win, Henin-Hardenne replaced Kim Clijsters as the world No. 1.

Patty Schnyder was the defending champion, but lost in the quarterfinals to Dokic.

Seeds
The first four seeds received a bye into the second round. • # 🇧🇪 Kim Clijsters (semifinals)

• # 🇧🇪 Justine Henin-Hardenne (champion)

• # 🇫🇷 Amélie Mauresmo (second round)

• # 🇷🇺 Elena Dementieva (second round)

• # 🇺🇸 Chanda Rubin (first round)

• # 🇯🇵 Ai Sugiyama (second round)

• # 🇷🇺 Vera Zvonareva (quarterfinals)

• # 🇸🇰 Daniela Hantuchová (first round)

Qualifying seeds
• # 🇮🇹 Francesca Schiavone (withdrew due to a shoulder injury)

• # 🇪🇸 Magüi Serna (qualifying competition, Lucky loser)

• # 🇺🇸 Lisa Raymond (Still competing at Filderstadt)

• # 🇷🇺 Svetlana Kuznetsova (qualifying competition)

• # 🇷🇺 Elena Likhovtseva (qualifying competition)

• # Katarina Srebotnik (qualified)

• # 🇦🇺 Alicia Molik (qualified)

• # Tina Pisnik (qualified)

• # 🇨🇴 Fabiola Zuluaga (first round)

• # 🇨🇿 Denisa Chládková (first round)

Qualifiers
• # Katarina Srebotnik

• # Tina Pisnik

• # 🇺🇸 Amy Frazier

• # 🇦🇺 Alicia Molik

Lucky loser

 * 1) 🇪🇸 Magüi Serna