Kimura BJJ is proud to inform you that Bill Duffy is listed twice on the World’s Greatest Grapplers ranking. (See ranking here.) Bill brought home the 1st place on the Masters (40 yrs. and over) No-Gi Lightweight (159.9 lbs. and below) and the 3rd place on the Masters (40 yrs. and over) No-Gi Middleweight (160 – 179.9 lbs.) Congratulations Bill!