Panning

I have not yet shot any motocross races, but I have to believe the constant movement in pretty much all directions has to be more challenging, especially at slower shutter speeds. What's supposed to be sharp, is. Very well done!

I have to agree with your comments in the "technical challenges" part. I bit soft, but given the challenges of shooting it, I can't imagine ever getting it as sharp as with cars or bikes. I love the determination in his expression.