There have been more than 10,000 qualified pitching seasons in history, and there’s a statistic for which the all-time leader is Marco Gonzales. I’m going to say that again: number one, out of more than 10,000.
The statistic in question? The gap between his ERA and his FIP (if you don’t know what FIP is, we’ll explain shortly). Going out more than two decimal places, Marco edges out Al Maul of the 1895 Washington Senators. 2022 Marco and 1895 Maul (who, by the way, is also in the top 10 in career stolen bases as a pitcher) sport ERAs that are 2.