Boy does this shot (and that problem) bring back YEARS of memories!! I don't know which was worse- the grass stains or the ground in dirt. I used a product made by Amyway that would be frowned upon now because it had phosphates in it. But it really was the only thing that could get either of those stains out. Nice shot!
An iconic piece of childhood. A friend here swears by some stuff from Mexico that gets out the brown dirt stains from baseball, not much help though for you.
Nice shot