If you were to ask John Hopkins what his least favorite track is right now, we’d bet good money the American would say the Dutch track Assen. The last time Hopper was in Assen, he smash his leg in a huge crash, which left him sitting out of two races, and struggling in pain for the rest of the season. Now, after only four laps around the course this year, Assen has shown its teeth again for Hopper. During the free practice today Hopkins dislocated his hip in another big crash, and there is doubt surrounding his return to riding by Sunday.