Maria Sharapova upset by Carla Suarez Navarro in 3 sets in Montreal

Maria Sharapova, of Russia, reacts during her round of sixteen match against Carla Suarez Navarro, of Spain, at the Rogers Cup tennis tournament Thursday, Aug. 7, 2014 in Montreal. (AP Photo/The Canadian Press, Paul Chiasson) (The Associated Press)

Carla Suarez Navarro, of Spain, returns to Maria Sharapova, of Russia, during the round of sixteen at the Rogers Cup tennis tournament on Thursday Aug. 7, 2014 in Montreal. (AP Photo/The Canadian Press, Paul Chiasson) (The Associated Press)

MONTREAL – Maria Sharapova was upset by Carla Suarez Navarro in a match interrupted twice by rain Thursday at the Rogers Cup.

Suarez Navarro won 6-2, 4-6, 6-2 to reach the quarterfinals.

The 16th-ranked Spaniard returned from the second delay to break Sharapova's serve and then fought off a break point in the next game thanks to a lucky net cord. She broke again in the final game.

The 25-year-old Suarez Navarro won her first WTA tournament this year at the Portugal Open in May.

The fourth-seeded Sharapova had struggled to a three-set win in her opening match Wednesday against Garbine Muguruza.

Earlier, Caroline Wozniacki routed Shelby Rogers 6-1, 6-0 to extend her run of one-sided victories. Rogers had upset local favorite Eugenie Bouchard on Tuesday.