Naomi Osaka punched her ticket to the Western and Southern Open quarterfinals for the second consecutive year by defeating Dayana Yastremska 6-3, 6-1 in New York on Tuesday.The fourth-seeded Osaka fired eight aces and saved all five break points she faced against her 20-year-old opponent from Ukraine, who is working with Osaka's former coach Sascha Bajin, in the 70-minute match."I wasn't really nervous and I was able to enjoy the match," Osaka said."I haven't reached the level of play that I want to yet but I'm getting there," she said.Related coverage:READ FULL ARTICLE