Uni Watch

Uni Watch

The Strange Case of the Early-1970s Orioles

The O’s had an unusually high level of uni churn during the early years of the polyester era.

Paul Lukas's avatar
Paul Lukas
Oct 23, 2026
∙ Paid
(Graphic from sportslogos.net)

Earlier this week I wrote about six MLB teams that have changed their uniforms for the World Series. Shortly after that piece was published, reader Patrick Manion posted a comment about a team he thought I’d neglected to include: “Didn’t the Orioles also make a fall classic change in 71 to double knits or similar?”

The answer is yes — sort of. And the more I looked into the particulars, the more I realized that the Orioles’ uniforms were quite a jumble during the early 1970s. Granted, this was a complicated period for MLB unis overall, because teams were transitioning from flannels to polyester doubleknits, but the Orioles appear to have been in a greater state of flux than most other teams. The situation is further muddled because one of the primary uniform reference guides has done a poor job of documenting it (although another guide, thankfully, has been much better).

Here’s a year-by-year look at what the Orioles were wearing at the dawn of the polyester era:

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