The list includes several professional leagues and associations that were never part of MLB.
In baseball, a save is credited to a pitcher who finishes a game for the winning team under prescribed circumstances.
Most commonly a relief pitcher ("reliever") earns a save by entering in the ninth inning of a game in which his team is winning by three or fewer runs and finishing the game by pitching one inning without losing the lead.
In retrospect, the five saves by Jack Manning meant he led the National League in its inaugural year, while Bill Hoffer was the American League's first saves champion with three.
Sutter is also tied with Harry Wright, Dan Quisenberry and Craig Kimbrel for the most consecutive seasons leading the league in saves with four.