What is Walks Allowed Per 9 Innings ?

Walks allowed per nine innings is a metric that shows, on average, how many walks a pitcher or team's pitchers gave up over a nine inning period. It's caluclated by dividing walks by innings pitched and then the result multiplied by nine. Generally, for Walks Allowed Per 9 Innings, lower is better. (Source)

What is a good Walks Allowed Per 9 Innings?

What does good Walks Allowed Per 9 Innings 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.
placeholder for list
placeholder for list
placeholder for list
placeholder for list

Career, Season, and Season Average Walks Allowed Per 9 Innings Records

For my hot take on Walks Allowed Per 9 Innings 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.
placeholder for list
placeholder for list
placeholder for list

Distribution of Career Walks Allowed Per 9 Innings by Player Generation

placeholder for chart

Distribution of Season Walks Allowed Per 9 Innings by Player Generation

placeholder for chart

Distribution of Career Walks Allowed Per 9 Innings by Player Position

placeholder for chart

Distribution of Season Walks Allowed Per 9 Innings by Player Position

placeholder for chart