Marvin Musquin Reacts to Winning A1, Post-Race Press Conference Jack Korpela 6 years ago Marvin Musquin and Ken Roczen KTMs Marvin Musquin reacts to winning the 2018 Supercross opener in Anaheim, Calif. Post-race press confernce featuring the top three finishers from the 250 and 450 class.