About Earned Run Avg (ERA)

Aroldis Chapman's Earned Run Avg (ERA) was 2.356 for his 12-year Major League Baseball career. 2012 was his best season when his Earned Run Avg (ERA) was 1.507 and his worst season was 2011 when his Earned Run Avg (ERA) was 3.600. Aroldis Chapman outperformed similar player cohorts when comparing career totals, besting Cuba (4.31197), Millenial (4.48967), Y (3.06933), mlb (4.3602), and RP (4.40009) 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)

Aroldis Chapman's Earned Run Avg (ERA) Per Season Line Chart

This line chart shows Aroldis Chapman'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, RP, 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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Aroldis Chapman Earned Run Avg (ERA) Change by Season

This waterfall chart attempts to show how Aroldis Chapman'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) Aroldis Chapman had at that season in his career.
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Aroldis Chapman's Earned Run Avg (ERA) Per Season Box Chart

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

This table shows Aroldis Chapman'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, RP, and players from their country of birth. The comparisons are calculated for each group for each year of Aroldis Chapman'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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