<p>I notice that the <code>Reversal</code> badge has been <a href="https://stats.stackexchange.com/help/badges/57/reversal">awarded just a single time</a>, to @Macallan in 2015. I was rather sad to see that for something this rare - an answer apparently that good to a question apparently  that terrible - that the question was subsequently deleted. </p>

<p>But <a href="https://stats.meta.stackexchange.com/q/2903/121522">this question</a> from @Glen_b says "It looks like OPs can only delete a question with an answer if there's only one answer and the answer isn't upvoted". </p>

<p>Does this mean that the question was deleted by mods? Is it okay to ask what happened there? And what pearls of wisdom I missed out on because that answer of >+20 was deleted? </p>
