"The automatic double is quite often mistakenly called a ground rule double" - from the Wikipedia entry for "Ground Rule Double". Which makes sense, because a rule that applies to EVERY ground can hardly be called a ground rule.
Hotbox should be another answer for a pickle or rundown. I grew up playing baseball in the Pacific Northwest of the US, but I don't think it's a regional term. I've definitely heard hotbox on national broadcasts. Also, wikipedia lists hotbox.
I admit to cheating on this one - my husband was helping me, and hotbox was the only answer he could think of. We live in the Upper South so it's not a regional term. He played baseball, coached baseball, watches baseball, and had a nephew who played in the Majors, but says he never heard of the term pickle for rundown. Then again, he dozes a lot during games. :)
Technically speaking, the actual term for what we call a “ground-rule double” is either “automatic double” or “rule-book double.” A ground-rule double means a double that is granted automatically by ground-specific rules, as in rules that only apply to one specific ballpark. For example, a ball getting lost in the ivy of Wrigley Field, or a ball hitting a certain catwalk at Tropicana Field. So, while ground-rule double is still the most common term, the two I mentioned earlier probably should be accepted
Sorry to see that relatively few people aced this quiz. Baseball is said to be losing its market share. More American kids are playing basketball than baseball nowadays. Oh, well, spring will soon be here.
https://en.wikipedia.org/wiki/Rundown
Other than that fun quiz, thanks! 👍