Jack Aker ERA

Jack Aker Career ERA Overview

Jack Aker's ERA was 3.28 for his 11-year Major League Baseball career. 1966 was his best season when his ERA was 1.99 and his worst season was 1964 when his ERA was 8.82. Jack Aker is middlin' tier compared to similar player cohorts career totals, not clearly beating or being beat by USA (4.3461226399548), The Silent Generation (4.0391094605497), mlb (4.3614031148122), RP (4.3865965377218), and Y (3.0750522047158) player career averages. See the charts and graphs below that visualize this information in more detail.

Earned run average (ERA) is a metric that shows how many earned runs on average, a pitcher or team's pitcher, gives up over the course of nine innings. It is calculated by dividing earned runs by innings pitched then multiplying the result by 9. Generally, for ERA, lower is better. (Source)

Jack Aker Lifetime ERA and Similar Stats

Stats similar to ERA for Jack Aker

	Jack Aker ERA	Jack Aker Component ERA	Jack Aker Defense Independent ERA
Career	3.28	3.45	4.29
Season Avg.	3.71	3.96	4.74
162 Game Avg.	3.28	3.45	4.29
More Info	See More	See More	See More

Jack Aker ERA By Year Line Chart

This line chart shows Jack Aker's yearly ERA for each season of his Major League Baseball career. Also included, for comparison, are yearly player averages for MLB, Hall of Fame players, RP, and players from their country of birth. For these groups, averages are calculated for each group's performance for the defined year.

Jack Aker ERA By Year Change

This waterfall chart attempts to show how Jack Aker's career ERA changed per season. This data is cumulative for each season, each column represents the career ERA Jack Aker had at that season in his career.

Jack Aker ERA By Year Box Chart

This chart attempts to draw comparisons between Jack Aker and related player groups by summarizing ERA for each season played by Jack Aker. The box represents the middle 50% of the data for each player with the line in the box being the median value. The whiskers represent the ranges for the top and bottom 25% of the data. Review the spread and medians to draw your conclusions!

Jack Aker ERA Per Season Stats Table

This table shows Jack Aker ERA stats per season for his full MLB career with the aggregations’ sum, average, minimum, maximum, and median. Also included, for comparison, are season player averages for MLB, Hall of Fame players, RP, and players from their country of birth. The comparisons are calculated for each group for each year of Jack Aker career.

Note: "—" indicate there were no players for comparison for a specific year. Most commonly this happens for the hall of fame group where there may not have been a hall of famer playing that year.