Spain’s Carolina Marin, the reigning Olympic champion and former world number one, sailed into the quarterfinals of the Princess Sirivannavari Thailand Masters badminton tournament by defeating Pornpawee Chochuwong from the host nation on Thursday.

Marin, seeded fourth and currently the world number 10, barely broke a sweat as she demolished her opponent in straight sets 21-11, 21-9 in the second round of the Super 300 tournament. EFE-EPA