Red Sox play ball with a new signature sponsor - BOStoday
Mark Raffa, Sales Manager, MassMutual Center for Wealth Preservation
Red Sox - MassMutual
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Red Sox, MassMutual Partner Up
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Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
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Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
MassMutual lands deal for patch on Red Sox uniforms; Springfield company's deal with $17M yearly (report)
MassMutual becomes 'signature sponsor' for Boston Red Sox
Angels pitcher claimed off waivers by Red Sox, Corey Kluber injury move follows