Boston Red Sox 'push the envelope' with marathon-inspired blue-yellow uniforms - ESPN
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
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Logos and uniforms of the Boston Red Sox - Wikipedia
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MLB's new uniform rules won't prevent Red Sox from keeping Boston traditions – Boston Herald
MLB Jersey & Cap History
Boston Red Sox bringing back yellow and blue jerseys this week: 'We need the team store to sell a few of them,' Alex Cora jokes
THEN AND NOW: MLB Team Uniforms