I think the manager has very little effect on the outcome, so it doesn't matter how many more years. Should Leyland, Girardi, Black, and Torre be fired because they aren't in first place. I have seen many posters and fans hold these managers in high regards through the years. Only one has a better record than the Brewers this year, even though they all have as much talent as the Brewers. The guys you mentioned above have been winners. Yost has not, that is why they shouldn't be fired.