Naomi Osaka followed Simona Halep through the exit door at the BNP Paribas Open as the top two players in the world were sent packing in the fourth round at Indian Wells. World number one Osaka never found her rhythm against Belinda Bencic as the Swiss used her precise ground strokes and pinpoint serving to topple the defending champion 6-3 6-1 in just over an hour. The 22-year-old Bencic, who has risen as high as world number seven before missing time with injuries, hit a forehand volley on match point to seal the win and send her into the quarter-finals. She will have another shot at a top-10 player when she takes on hard-hitting world number five Karolina Pliskova, who smashed 13 aces to dispatch Anett Kontaveit 7-6(0) 4-6 6-2 to reach the quarter-finals. Osaka’s loss ended a bad day for world number ones after the men’s top player, Serb Novak Djokovic, fell 6-4 6-4 to Philipp Kohlschreiber. The German punched the air in celebration after a video review confirmed that his forehand winner caught the line on match point to seal the upset victory in Indian Wells.