It always does.
Look at the years the Sox won or came real close:
1967: Lonborg
1975: Tiant, Lee & Wise
1986: Clemens, Boyd, Hurst
2004: Pedro, Schilling, Wake, Lowe
2007: Beckett, Schilling, Wake, Dice-K
2013: Lester, Lackey, Buch
2018: Sale, Price, Porcello, ERod
It's no coincidence our ring years had some of our very best starting pitchers and rotations.