Jean William Prevost wins Ninja Spin 2017 Posted on June 11, 2017 by Effraim — 9 Comments ↓ Jean William Prevost is on a roll, Dub just took the win at stop 2 of the 2017 World Circuit at Ninja Spin in Grenoble, France. Followed by Dominik Nekolny and Matthias Dandois on the podium.