The mother of Aidan Zingg, the rising young motocross star who tragically died after crashing during a competition in California last month, has confirmed his cause of death.

International Sports News: The motocross community is in mourning after rising star Aidan Zingg, just 16, tragically passed away due to cardiac tamponade following an incident at a race. Explore ...

San Francisco 49ers Fans: 49er fan central for fan clubs, contests and promotions, newsletters, faithful rewards and more ...

Shimoda makes it two overall wins in three races, with 2-1 scores in the 250 class Jett Lawrence posts 3-1 moto finishes for second overall Steady fourth-place 450 overall result for Hunter Lawrence ...