The starting gate for motocross' opening race this weekend will be stacked with the best riders in the sport, all healthy and ready to take on what should be one of the most competitive seasons in recent memory.Of course, they all have to stay healthy for it to stay competitive, which, in a dangerous sport like this, is no guarantee."If it were my way, I'd love for every guy to be there," said defending champion Ryan Dungey. "It doesn't feel the same winning as it would winning when every guy is on that line. That's when all the hard work feels good. I think everyone would agree with that."