Stewart's daredevil style fuels success -- and some YouTubeworthy crashes. FORTUNE -- James "Bubba" Stewart isn't the first athlete to make more in endorsements than he does in winnings.

James Stewart Jr., also known as Bubba, began riding motocross professionally at the age of 16, but has literally grown up on a bike. Stewart was named AMA Rookie of the Year in 2002 and since ...

NASHVILLE, Tenn. – With nonstop action laid out in panorama far below the Nissan Stadium press box, Ricky Carmichael and James Stewart managed the Supercross chaos as deftly as ever. But for two ...

James Stewart begins pursuit of his third Monster Supercross championship Saturday at Angel Stadium in Anaheim. Like Tiger Woods and Serena Williams, Stewart didn't set out to break down barriers ...

So what exactly was that thing on James "Bubba" Stewart’s Yamaha on Saturday night? Stewart won Saturday night’s AMA Monster Energy Supercross race at Chase Field in Phoenix, but it didn’t ...

Two-time supercross champion James Stewart was suspended from competition after failing a drug test earlier this year, the International Motorcycling Federation, or FIM, said Wednesday. Stewart ...

As the supercross season opens tonight at Angel Stadium, the question is whether reigning champ James Stewart will be slowed either by a muddy track or his layoff from an injury last year.

A motocross force of nature, James ‘Bubba’ Stewart has left a lasting imprint on the sport, not only for his sheer dominance, being one of only two riders in history to win perfect ...

James Stewart has been provisionally suspended by the governing body of Supercross for a failed drug test, but will be allowed to finish the outdoor season. Stewart tested positive for a banned ...

OAKLAND, Calif. -- James Stewart of Haines City, Fla., won the Monster Energy AMA Supercross race Saturday night at O.co Coliseum, his first Supercross Class Main Event victory of the season.

James Stewart has been provisionally suspended by the governing body of Supercross for a failed drug test, but will be allowed to finish the outdoor season. Stewart tested positive for a banned ...

Malcolm Stewart claimed his first 450 Supercross win last night in front of his hometown crowd in Tampa Bay, FL. The younger ...