Mad Men star Jon Hamm is one of the most famous Cardinals fans in the world, and the St. Louis native wasn’t about to change his stripes just because he was in attendance at Wrigley Field for Game 3 of the World Series.

Of course, the Cubs and Cardinals are huge rivals … so this is kind of a huge troll job:

Jon Hamm, trolling at its finest. pic.twitter.com/EtkA4ByY1h — Joon Lee (@iamjoonlee) October 29, 2016

But wait! If Hamm was really conscious about the kind of hat he was wearing, it might be an even bigger act of trolling than we previously thought. Here’s a curious observation by one writer:

This is the St. Louis Cardinals logo from 1900 to 1919. Next-level trolling. https://t.co/rjaicTnB2K — Joon Lee (@iamjoonlee) October 29, 2016

When did the Cubs last win a World Series? That would be in 1908, when the Cardinals would be wearing that same hat.