Defense Independent ERA Records and Details
What is Defense Independent ERA ?
Defense-Independent Component ERA (dERA) is a tweak on component ERA, a metric used to forcast the ERA based upon other pitching statistics. Defense-Independent Component ERA removes a pitcher defensive statistics and focuses only on their pitching statistics. Generally, for Defense Independent ERA, lower is better. (Source)
What is a good Defense Independent ERA?
What does good Defense Independent ERA mean? "Good" baseball stats can be very subjective and mean different things to different people. I have attempted to quantify good and bad by taking season and career stats for MLB pitchers with a minimum number of pitched outs. In this case 100 for career and 50 for a season. To find good and bad within this cohort of players I calculated the first and third quartiles, anything between these quartiles I consider average. This makes up the middle 50% of players. In an example where higher is better for a stat, below the first quartile (bottom 25% of players) would be bad and above the 3rd quartile (top 25% of players) would be good. For stats where lower is better, flip around good and bad.
Career, Season, and Season Average Defense Independent ERA Records
For my hot take on Defense Independent ERA records most of the same rules apply from the first section. To be considered for my prestigious lists the player must meet a certain threshold of pitched outs. Since this is a Pitching stat to be considered for the career list the player must have over 100 pitched outs, for a season consideration the player must have had 75 pitched outs. Additionally, the player's final game must have been after 1899.