MassMutual becomes 'signature sponsor' for Boston Red Sox

Yankees get over $20 million a year for Starr Insurance patch

John Hancock ending long-held Boston Red Sox sponsorship

Iconic Massachusetts Brands Unite: MassMutual Named Signature

Fenway Sports Management

For the first time, historic Boston Red Sox jersey will have a

MassMutual lands deal for patch on Red Sox uniforms; Springfield

Boston Red Sox Sign Long-Term Jersey Sponsor - Ministry of Sport

MassMutual will be the first sponsor to have its logo on Red Sox

Take us out to the ballgame - BOStoday

MassMutual will be advertising on the Red Sox jersey in 2023

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