India completed their men's Olympic Pool A campaign with four wins from five matches after beating Japan 5-3 in an entertaining hockey encounter yesterday.
Japan gave a brave account of themselves, but inexperience saw them on the losing end.
So far, Australia, India and Spain have booked their slots for the quarter-finals from Pool A.
In Pool B, the four quarter-finalists are Belgium, Netherlands, Britain and Germany.
Although India were already assured of a quarter-final berth going into the match against Japan, they did not slow down their momentum.
India scored through Gurjant Singh (17th, 56th), Harmanpreet Singh (13th), Shamsher Singh (34th) and Nilakanta Sharma (51st) at the Oi Stadium in Tokyo.