Home runs per nine innings
In baseball statistics, home runs allowed per 9 innings pitched (HR/9IP or HR/9) or home runs allowed per nine innings (denoted by HR/9) is the average number of home runs given up by a pitcher per nine innings pitched. It is determined by multiplying the number of home runs allowed by nine and dividing by the number of innings pitched. Pitchers with high fly ball rates are more likely than pitchers with high ground ball rates to have high HR/9 rates.
- What is a Home Runs Per Nine Innings (HR/9)? | Glossary | MLB.com
- Career Leaders & Records for Home Runs per 9 IP | Baseball-Reference.com
- Single-Season Leaders & Records for Home Runs per 9 IP | Baseball-Reference.com
- Active Leaders & Records for Home Runs per 9 IP | Baseball-Reference.com
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