To win a World Series, you just might need an ace. Someone like Madison Bumgarner, or Frank Viola.
To accomplish the Twins' current goal, which is to not be awful, the requirements for a starting rotation are less grandiose.
The Twins need their rotation to not be terrible.
That's the first and most important step to becoming competitive.
And that's why archaic, often-ridiculed metrics like "quality starts" can be far more important than any advanced metrics.
As the Twins desperately try to end perhaps the worst four-year run of incompetence in franchise history, they will turn to the lowly, old-school punchline that is the quality start.
The quality start statistic was invented by esteemed baseball writer John Lowe. It posits that a pitcher who gives his team, at worst, six innings pitched and three or fewer earned runs allowed has given his team the proverbial chance to win.
If a pitcher does the minimum required, he can win a game despite leaving three innings to his bullpen and compiling a 4.50 ERA. That's why old-school pitchers and new-school statisticians scoff at the measurement.