Canadian Leylah Fernandez, 18, shocks defending champion Naomi Osaka in US Open's third round | CBS Sports Headlines Canadian Leylah Fernandez, 18, shocks defending champion Naomi Osaka in US Open's third round Osaka was visibly frustrated throughout the match, throwing her racquet and hearing boos from the fans ESN FeedsThis … Continue reading Canadian Leylah Fernandez, 18, shocks defending champion Naomi Osaka in US Open's third round