Red Sox play ball with a new signature sponsor - BOStoday
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
MassMutual is first jersey patch sponsor of the Red Sox
MassMutual lands deal for patch on Red Sox uniforms; Springfield company's deal with $17M yearly (report)
Gn 011516 by The Island 360 - Issuu
Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
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NYSportsJournalism.com - Home
Red Sox debut new uniform advertisements as part of 10-year deal with MassMutual, Sports
It's come to this: our Red Sox as human billboards
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
Red Sox, MassMutual near a $17M jersey patch deal - Boston Business Journal
Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe