During the World Yo-Yo Contest 2015 in Tokyo, the American Ben Conde will perform impressive tricks with his yo-yo and an unrelated string. This style is named 4A or offstring and reminds a diabolo. During his performance, the man will be very impressive, he rolls his yo-yo on his body, bouncing it on the floor and rotate in all directions. Ben Conde came 5th in the competition won by the Japanese Naoto Onishi. Yes this is impressive but I stay on my point of view : Nerd sport. 😉