Naomi Osaka's homecoming couldn't have gone much better. Playing in her first tournament since winning the U.S. Open, third-seeded Osaka impressed her Japanese fans Wednesday with a powerful 6-2, 6-1 win over Dominika Cibulkova to reach the quarterfinals of the Pan Pacific Open. Osaka was in control of the second-round match from the outset, breaking Cibulkova's serve in the first game at a sold-out Tachikawa Arena.