One of the biggest parts of the business side of baseball for MLB teams is branding and merchandise. Every few years the majority of the teams will tweak or completely overhaul their uniforms as a way to provide fans with new merchandise and to keep their image fresh.

The problem is that the majority of sports teams at one point in time have run out some pretty ugly uniforms, like this Astros uniform from the 1970s.

These are the top 10 ugliest uniforms in MLB history.

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