Jessica Pegula defeated Liudmila Samsonova in the final, 6–1, 6–0 to win the women's singles title at the 2023 Canadian Open. It was her second WTA 1000 title. Due to rain, Samsonova had to play two matches (third round and quarterfinals) on Friday and two matches again (semifinals and final) on Sunday; she only had a two-hour break between the semifinal and final match. Pegula, on the other hand, played one match each day of the tournament from Wednesday through Sunday.[1]
Simona Halep was the reigning champion,[2][3] but could not defend her title due to a provisional suspension for violations of anti-doping rules.[4]
This tournament marked the return to professional competition of former No. 1 player Caroline Wozniacki, who previously retired from the sport in 2020.[5] She lost to reigning Wimbledon champion Markéta Vondroušová in the second round.[6]
The following are the seeded players. Seedings are based on WTA rankings as of 31 July 2023. Rank and points before are as of 7 August 2023.
The event is not mandatory on the women's side and points from the 2022 tournament are included in the table below only if they counted towards the player's ranking as of 7 August 2023. For other players, the points defending column shows the player's 16th best result.
Points defending will be replaced at the end of the tournament by the highest of (a) the player's points from the 2023 tournament, (b) her 17th best result, or (c) points from her second-highest non-mandatory WTA 1000 event.
† Points from the player's 16th best result (for points defending) or 17th best result (for points earned), in each case as of 7 August 2023.
‡ The player is defending points from a WTA 125 tournament (Concord).
§ No change in points because points from this tournament did not count as one of the player's 16 best results.
† Points from the player's 16th best result.
§ No change in points because the player's result from the 2022 tournament did not count towards her ranking as of 7 August 2023.