Monster Energy Kawasaki’s Jake Weimer suffered a broken arm in a practice crash today at Ryan Villopoto’s private Supercross track. TransWorld Motocross was on hand this morning to shoot some photos and video, and the crash happened shortly after we left. According to Valli Motorsports’ Nick Wey, who was also there, the arm is broken just above the wrist, and both the radius and ulna were broken. Weimer is undergoing surgery to have the arm plated this afternoon. Our best wishes go out to Weimer for a speedy recovery.