Race Day LIVE - 2015 Anaheim First Round - 450 Second Practice

The 450SX riders battle it out in the second qualifying practice! Monster Energy AMA Supercross, an FIM World Championship, is an off-road motorcycle racing competition, produced inside a stadium that seats no less than 35,000 fans, where dirt is brought in and sculpted using construction equipment. Widely regarded as the king of extreme sports, AMA Supercross is considered the NASCAR of motocross. Some of the world’s greatest athletes compete in what has been described as the most physically demanding spo