100% true, no one can. The best analytics and math can never ensure an outcome. But I can tell you as certain fact, the math says - if you can't have your best pitcher pitch in 162 games, you'll get the most value using him in the ones you have a lead and keeping him out of the ones you're losing. The best any pitcher can do is hold the other team at zero additional runs. No pitcher has the ability to take runs already scored off the board. If you have to pick and choose when to use your best bullets, use them in situations where no matter what your offense does the rest of the way, you can still win. Using Hader in games the Brewers trail, where the odds still say they're more likely to lose, is not the best allotment of innings. You can't say this at all. You get the most value out him by maximizing the inning he pitches at a highly effective level. For example, if Hader was on the Orioles and only had 40 appearances this season it would not be the most valuable usage of him.