Naomi Osaka relied on a dominant serve to reach the final of the Pan Pacific Open on Saturday with a comfortable 6-2, 6-3 win over Camila Giorgi. The U.S. Open champion, who upset Serena Williams in the final in New York, overpowered her unseeded opponent and will face fourth-seeded Karolina Pliskova in Sunday's final. Third-seeded Osaka fired nine aces and dropped just eight points in eight service games.