Leylah Fernandez, Bianca Andreescu through to quarterfinals at Toray Pan Pacific Open

Canadians Leylah Fernandez and Bianca Andreescu have both moved on to the quarterfinals at the Toray Pan Pacific Open in Tokyo.

Fernandez advanced after downing Varvara Gracheva 6-0, 3-6, 7-5 on Wednesday.

The 22-year-old from Laval, Que., fired three aces and converted 5-of-11 break points during the two-hour 15-minute match.

WATCH | Fernandez scores 3-set win in Tokyo:

Leylah Fernandez wins her way into the Pan Pacific Open quarterfinals

Gracheva, of France, battled back in the second set, winning 72.2 per cent of her first-serve points, before Fernandez rallied in the third set.

Andreescu, from Mississauga, Ont., advanced after Beatriz Haddad Maia retired due to a back injury while trailing 3-0 in the first set. Haddad Maia, the No. 2 seed, appeared to be in pain from the second game onward and took a medical timeout before exiting the match.

WATCH | Andreescu walks into the Pan Pacific Open quarters:

Bianca Andreescu walks into the Pan Pacific Open quarterfinals

In the quarterfinals, Fernandez takes on the winner of a matchup between the tournament's top seed, Qinwen Zheng of China, and Japan's Moyuka Uchijima, while Andreescu faces either Katie Boulter or Kyoka Okamura.

In women's doubles action, Ottawa's Gabriela Dabrowski and her partner Erin Routliffe were up 6-3, 1-2 on Japanese pair Nao Hibino and Miyu Kato when their match was suspended.