Take a lap around round 15 in Philadelphia with the ‪@YamahaMotorUSA‬ track map! Watch official race highlights, press conferences, and rider interviews from the Monster Energy AMA Supercross Championship — the world’s premier stadium racing series. Follow the 450SX and 250SX athletes as they battle each round on the most technically demanding tracks in motorsports, competing for the Supercross Championship and critical points toward the SMX World Championship.