Eighth-seeded Leylah Fernandez of Canada survived a first-round challenge from Aliaksandra Sasnovich at the Toray Pan Pacific Open on Monday in Tokyo.

The battle to reach the last eight at the WTA Pan Pacific Open in Tokyo begins with four second-round matches on Wednesday. Former US Open champion Bianca Andreescu faces her first major test at the tournament when she goes up against Beatriz Haddad Maia.

TOKYO — Canada's Bianca Andreescu and Leylah Fernandez earned first-round victories at the Toray Pan Pacific Open on Monday. Andreescu, from Mississauga, Ont.