Haiden Deegan and Hunter Lawrence went down in the opening seconds of moto 1 at Ironman with a championship title on the line. #NBCSports #ProMotocross #SuperMotocross #SMX » Subscribe to Motorsports on NBC: youtube.com/motorsportsonnbc?sub_confirmation=1 » Get the latest motorsports news on NBC Sports: nbcsports.com/motors » Watch SuperMotocross on Peacock: peacocktv.smart.link/v82e9dl56 NBC Sports — the home of motorsports — features unparalleled motorsports programming, fueled by the network’s media rights agreements with NASCAR and SuperMotocross. NBC Sports has motor sports coverage spanning NASCAR, Monster Energy AMA Supercross, Pro Motocross Championship, SuperMotocross World Championship, IMSA, MotoAmerica, and the Dakar Rally. Subscribe to our channel for the latest motors news and highlights! The Pro Motocross Championship, sanctioned by AMA Pro Racing, features the world’s fastest outdoor motocross racers, competing aboard homologated bikes...