Theory popularized by: Bob Gibson, Sandy Koufax, Orel Hershiser, the 2001 Diamondbacks.
The numbers (Examining all playoff teams since 1995)
We defined a "true No. 1 ace" as a pitcher who finished in the top five in his league in park-adjusted ERA (from baseball-reference.com) and pitched at least 162 regular-season innings.
1. Pitching wins championships
2. You gotta play small ball
3. You have to be hot entering postseason