I just like Boston.  I'd add: show up and do the work.

Forbes article says it comes down to leadership and values:

And when it came to the 2012 Red Sox, Cherrington’s challenge was not just to fire Valentine but to find a great manager to replace him. And that came on October 21, 2012 when Cherington hired former Red Sox pitching coach John Farrell to replace Valentine.

Cherrington was hiring Farrell, in part, because he could lead a team with a set of values that were inherent to the Red Sox and to players like Victorino, Gomes, and Uehara.

As Bleacher Report wrote, “All these players were lauded for their easygoing approach to the game and bringing Boston baseball back to the forefront. It is a testament to the job Cherington did—not just signing them but going through a vetting process to ensure these players could handle the intense scrutiny that comes with being a member of the Red Sox.“