About Earned Run Avg (ERA)

Randy Johnson's Earned Run Avg (ERA) was 3.293 for his 22-year Major League Baseball career. 1997 was his best season when his Earned Run Avg (ERA) was 2.282 and his worst season was 2006 when his Earned Run Avg (ERA) was 5.005. Randy Johnson is middlin' tier compared to similar player cohorts career totals, not clearly beating or being beat by USA (4.34489), Baby Boomers (4.22646), mlb (4.3602), SP (4.32618), and Y (3.06933) 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 Earned Run Avg (ERA), lower is better. (Source)

Randy Johnson's Earned Run Avg (ERA) Per Season Line Chart

This line chart shows Randy Johnson's yearly Earned Run Avg (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.
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Randy Johnson Earned Run Avg (ERA) Change by Season

This waterfall chart attempts to show how Randy Johnson's Earned Run Avg (ERA) changed season over season. This data is cumulative for each season, each column represents the career Earned Run Avg (ERA) Randy Johnson had at that season in his career.
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Randy Johnson's Earned Run Avg (ERA) Per Season Box Chart

This chart attempts to draw comparisons between Randy Johnson and related player groups by summarizing Earned Run Avg (ERA) for each season played by Randy Johnson. 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!
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Randy Johnson's Season Earned Run Avg (ERA) Stats Table

This table shows Randy Johnson's Earned Run Avg (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 Randy Johnson's 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.
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