It also requires financial flexibility and the ability to make key changes.
Look at the run the Yankees made from 1996 through 2001 - a stretch of only 6 seasons. The only players there for all six years were Jeter, Bernie, Tino, Posada, Pettitte and Rivera. Only six seasons, but only two pitchers were there.
That 1996 team had Kenny Rogers and Jimmy Key as the pitchers behind Pettitte. They had Rivera, but he wasn’t the closer.
The rest of the team turned over a lot and turned over a lot.
They also maintained the highest payroll in MLB to make that success happen, and were carried by a bunch of farm system players. They didn’t bring in anyone on any sort of crazy 7 year $200 mill contract and watch them age out of usefulness.
But they had the guts/brains to sell high on David Wells, held on to their younger players and rearranged a lot of seats.
The 2018 Red Sox were never in a position to replicate that. It’s not just about “hard work.” No amount of diligence from DD was going to keep Price effective, and no amount was going to lower his costs or increase their flexibility.
“Sustainability” is not a buzzword; it’s a plan.