Jerry Koosman Career ERA Overview
Jerry Koosman's ERA was 3.36 for his 19-year Major League Baseball career.
1968 was his best season when his ERA was 2.08 and his worst season was 1967
when his ERA was 6.04. Jerry Koosman 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), SP (4.3392668544321), 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)
Jerry Koosman Lifetime ERA and Similar Stats
Stats similar to ERA for Jerry Koosman
| Jerry KoosmanERA | Jerry KoosmanComponent ERA | Jerry KoosmanDefense Independent ERA |
---|
Career | 3.36 | 3.33 | 3.64 |
Season Avg. | 3.59 | 3.54 | 3.82 |
162 Game Avg. | 3.36 | 3.33 | 3.64 |
More Info | See More | See More | See More |
Jerry Koosman ERA By Year Line Chart
This line chart shows Jerry Koosman'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, SP, and players from their
country of birth. For these groups, averages are calculated for each group's performance for the defined year.
Jerry Koosman ERA By Year Change
This waterfall chart attempts to show how Jerry Koosman's career ERA changed per season.
This data is cumulative for each season, each column represents the career ERA Jerry Koosman
had at that season in his career.
Jerry Koosman ERA By Year Box Chart
This chart attempts to draw comparisons between Jerry Koosman and related player groups by summarizing ERA
for each season played by Jerry Koosman. 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!
Jerry Koosman ERA Per Season Stats Table
This table shows Jerry Koosman 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,
SP, and players from their country of birth. The comparisons are calculated for each
group for each year of Jerry Koosman 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.