I’ve only ever watched one baseball game — sat in the bleachers at PNC Park to see a Pittsburgh no-hitter — so it’s fair to say it’s not my thing. Still, I found this GIF for the evolution of MLB logos interesting.
A few inaccuracies were mentioned in the comment thread on Yahoo Sports, but on the whole it seems well pieced together. What stood out the most was the widespread use of mascots between the 1950s and 70s, tying in with the prevalence of mascots in a lot of product branding at the time. Those logos definitely had more character than many of today’s marks (no pun intended), although some didn’t go down too well.
The GIF is by Yahoo Sports’ Eric Orvieto, and if you’re also thinking a pause button would be nice, you can see each team in a lot more detail on Chris Creamer’s fantastically detailed SportsLogos.Net. Scroll through the Pirates page, for example.