Everything’s coming up the ’80s for Major League Baseball’s 2015 postseason.

The Chicago Cubs rode 1989’s Back to the Future II World Series prediction wave through an impressive National League playoff run that was eventually wiped out by the New York Mets.

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As for those Mets, the current National League pennant winners haven’t won a World Series since 1986. A year earlier, the Kansas City Royals were victorious in the 1985 Fall Classic. Those two teams will meet in this year’s World Series, which begins Tuesday.

All this harkening back to the ’80s might have nudged Reddit user Antithesys into thinking about the signature board game of the Me Decade, Trivial Pursuit—that would explain the user’s self-titled “Useless World Series trivia” post in the Baseball community. Antithesys’ item even inspired other users to offer up their own pieces of obscure knowledge in the thread.

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Keeping with the 1980s theme, we highlighted some of the facts from the post and put them in the categories from the original Trivial Pursuit Genus edition (albeit with some slight modifications).

Geography

Kansas City, Mo., and New York City (Wikimedia Commons/Andrés Nieto Porras)

“Both contenders play in the same state as the team with the most World Series titles in the opposite league.”

For the less-than-casual baseball fan, those two teams would be the American League’s New York Yankees (27) and the National League’s St. Louis Cardinals (11).

Entertainment Expansion

“This is the first World Series between two expansion teams.”

What’s the definition of an MLB expansion team, especially since the Mets have been in the league since 1962? Antithesys fielded that question when another user brought it up, and users Flabpack221 and bwburke94 expanded on the answer:

History Politics

President Barack Obama throws out the first pitch for the Washington Nationals in 2010 (Fristle/Wikimedia Commons)

“Neither club has won a World Series under a Democrat, though both have lost under Democrats.”

This fact is every right-wing reactionary’s worst nightmare—or maybe that should be wet dream?—and user Nineties primed the conspiracy theorists and Fox News analysts.

Arts & Literature

User Frigidevil contributed the following bit of trivia. While it’s not directly about the 2015 World Series, it does have a connection, and it shows how stealing a base truly is an art form.

Science & Nature of Numbers

For this category, the magic number is 1984. That’s the last year, Antithesys noted, for two interesting facts:

It was the last World Series between teams that have never relocated or changed their name.

It was the last time the difference between championships droughts among pennant winners was a year.

Sports & Leisure Laurels

New York Mets pitcher Jacob deGrom (slgckgc/Wikimedia Commons)

User PKMKII provided the Mets-centric information for the final category: