A fabulous baseball/legal rabbit warren I stumbled upon last night—while watching the incredible Dodgers-Orioles game—into which one can dive and spend hours better understanding both baseball and law, amongst various and sundry related (and wholly unrelated) time-wasting matters[1]:
https://en.m.wikipedia.org/wiki/The_Common_Law_Origins_of_the_Infield_Fly_Rule
1. I found myself sorely tempted to footnote much of the foregoing, but somehow managed to resist.[2]
2. Note 1 supra.