Frenchman Maxime Grousset easily qualified for the 100m butterfly final on Friday at the Fukuoka Worlds in Japan. Grousset qualified in 50.62, the second fastest time in the semi-finals, dominated by American Dare Rose (50.53). The native of Nouméa, 24, will line up on Saturday to try to win a third medal after bronze in the 100m freestyle and 50m butterfly.