Contains spoilers for "Boston Blue" Season 1, Episode 2 — "Teammates"

Former "Blue Bloods" fan favorite Danny Reagan ( Donnie Wahlberg ) is officially staying in Boston, and he's already participating in its most cherished cultural traditions. When Danny tells his son Sean (Mika Amonsen) he'll be sticking around, they're taking in a Boston Red Sox game at Fenway Park — and Danny has just been initiated into a real-life baseball ritual, belting out the chorus of Neil Diamond's "Sweet Caroline" along with the other attendees.

The Boston Red Sox have been using "Sweet Caroline" as a rally song since 1997, when Fenway employee Amy Tobey spontaneously played the tune as a tribute to an acquaintance's newborn daughter. The song was used off and on until Fenway entertainment director Charles St

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