Every manager has strengths and weaknesses.
With Rocco, the players like him and he manages personalities well.
But his in game decisions, especially with the pitching staff and things the like contact play have to be among the worst in the league. Zero feel for the game.
With that said, he does pluses as a manager that prevent from being among the worst overall managers. But if we're going just by gameday decisions, he's definitely among the worst.