HS Prannoy stunned second seed Kento Momota in straight games to record a sensational win while reigning Commonwealth Games champion Lakshya Sen also sailed into the men's singles pre-quarterfinals of the World Championships in Tokyo on Wednesday. Unseeded Prannoy rose above expectations to shut the door on crowd favourite and two-time former world champion Momota 21-17, 21-16 in a second round tie. Incidentally, it was Prannoy's first win over Momota in eight matches. In their previous clashes, the Indian won only one game against his higher-rated Japanese rival.