I don’t think anyone actually thinks uniforms have a measured impact on the outcome of games, but it’s almost a guarantee there is a psychological impact in some way, shape, or form. If you played sports in the age of alternate uniforms you would know. “Look good, feel good, play good” is a real thing, and so are superstitions. Whether or not fans like a uniform or not is irrelevant, but it does make a difference inside the locker room. The Boston Red Sox who are pretty big uniform traditionalists, are adding their “city connect” alternates into their rotation full time instead of replacing them with another version because of how much success they’ve had while wearing them. And those uniforms don’t match their color palette
at all.
Say goodbye to the Boston Red Sox's blue alternate jerseys and hello to a new City Connect uniform. Red Sox chief marketing officer, Adam Grossman, told Chris…
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There is probably also something to be said for teams that don’t mess around with alternates and the players not even worrying about uniform combinations. Alabama, UGA, the Packers, the Yankees, etc. The only distinction in uniforms is whether you’re at home or on the road, everything else is the same.
Long answer short, do uniforms automatically mean a W or L? No. But they
can make a difference. How big of a difference is a study I don’t have the capacity to build out.