Reigning US Open champion Gauff tops field at WTA Toronto event

The second-ranked American is joined by third-ranked Aryna Sabalenka and sixth-ranked defending champion Jessica Pegula in a field where several top players withdrew following the Paris Olympics.

Gauff and the other top-eight seeds received a first-round bye, but she will open in the second round against Sofia Kenin or a qualifier.

Also in her quarter of the draw are Japan's Naomi Osaka, a four-time Grand Slam champion, and Tunisia's Ons Jabeur, who meet in a first-round match. Jabeur withdrew in Washington last week with a right shoulder injury.

US seventh seed Madison Keys returns after a left leg injury forced her to retire in a Wimbledon quarter-final.

Among those to withdraw from Toronto were world number one Iga Swiatek, fourth-ranked Elena Rybakina, fifth-ranked Jasmine Paolini, seventh-ranked Olympic champion Zheng Qinwen, eighth-ranked Maria Sakkari, ninth-ranked Danielle Collins and 10th-ranked Barbora Krecjikova.