1998 du Maurier Open – Women's singles
Three-time defending champion Monica Seles defeated Arantxa Sánchez Vicario in the final, 6–3, 6–2 to win the women's singles tennis title at the 1998 Canadian Open. Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. The top nine seeds received a bye to the second round. Martina Hingis (semifinals)
  Jana Novotná (semifinals)
  Arantxa Sánchez Vicario (final)
 n/a
  Monica Seles (champion)
  Conchita Martínez (quarterfinals)
  Steffi Graf (third round)
  Amanda Coetzer (third round)
  Irina Spîrlea (third round)
  Patty Schnyder (first round)
  Nathalie Tauziat (third round)
  Dominique Van Roost (second round)
  Mary Pierce (first round)
  Sandrine Testud (quarterfinals)
  Anna Kournikova (third round)
  Ai Sugiyama (third round)
  Lisa Raymond (first round)

Draw

Finals

Top half

Section 1

Section 2

Bottom half

Section 3

Section 4

References
 1998 du Maurier Open Draw

Singles