Those are facts, but you are combining multiple roles.
Epstein was replaced by Cherington, who was replaced by Hazen, who was replaced (eventually) by O’Halloran.
Lucchino was replaced by Dombrowski, who was replaced by Bloom, who was replaced by Breslow.
Of all of these names, only Dombrowski and Bloom were fired. The rest left of their own volition or are still on board. This spans 12 years for two positions…