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Whole seasons and, championship aspirations, can be lost in as little as a single practice run, while underdogs and title holders trade places on the podium, as the 450 outdoors motocross season gets under way in Sacramento, California.

The 450 Moto, sees Ryan Dungey and Chad Reed battle it out for the overall lead. Rookie 250 sensation, Blake Baggett, shows his toughness and determination in the Texas heat.

Along with fast starts, good conditioning, and over all speed, family is just as an important to winning in motocross.

Tyla Rattray loves the heat. Broc Tickle looks to prove his worth. Kevin Windham continues to succeed despite his aging body and concerned family. All this and more come to a head at Budd's Creek.

KTM hired Rodger DeCoster away from the dominant Suzuki team to win a championship. In a show of support, his mechanics and technicians followed him into the unknown. With Mike Alessi's early season injury KTM's aspirations for a win are gone. KTM is forced to look to next year to finally win a championship that has eluded the dominant European bike company in America.

The battle for first in the 250 class rages on as Dean Wilson, Tyla Rattray, and Blake Baggett go blow for blow in both motos.

The racing world lost one of its own last week at Redbud. Josh Lichtle passed away from heat stroke complications. He was 23 years old.

The two former champions deal with failure and living in the shadows of their more successful teammates. Trey Canard looks to capitalize on momentum only to suffer another injury. While Jake Weimer just wants this forgettable season to end.

Tyla Rattray looks to gain ground on teammate and rival Dean Wilson, but a crash jeopardizes his championship aspirations. Andrew Short deals with on and off-the-track issues that make his season struggle.

The treacherous conditions at Southwick end one rider's championship run, put another rider in jeopardy, and provide a glimmer of hope for the future of another rider.

In the most dramatic Moto of the year, Ryan Villopoto beats Ryan Dungey on the last corner of the race. In the 250 class, a champion is crowned.

With the 450 Class Outdoor Championship on the line, Ryan Dungey takes on Ryan Villopoto and his 14-point lead at Pala Raceway. Dungey has more than the championship on his mind with a potential team change looming after the season.