Winter Classic 2023: Bruins, Penguins wear throwback MLB uniforms to honor historic Red Sox, Pirates teams

Bruins, Penguins rock vintage baseball uniforms at Winter Classic

With Winter Classic approaching, relationship with baseball a funny (and sometimes special) one for these Penguins

Bruins players wear vintage Red Sox uniforms before Winter Classic

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Penguins reveal throwback jerseys for 2023 Winter Classic

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Bruins, Penguins arrive at Winter Classic in vintage Red Sox, Pirates uniforms

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Bruins, Penguins rock vintage baseball uniforms at Winter Classic

Watch: Bruins, Penguins players rock old school baseball uniforms before Winter Classic