The runner rounds third and pounds toward home plate. With the ball still stuck in the outfield, a home run looks inevitable. But the grass, slick from the drizzling rain, proves to be the defense's greatest ally. The runner slips, and with cartoon-like acrobatics, flies through the air and lands flat on his face. Just as he gets to his feet, the third baseman throws the large yellow rubber ball at the target on the back of the runner's team shirt, tagging him out. No, this isn't a strange version of baseball or softball. This is kickball, that great American...