Runs per nine innings
From Free net encyclopedia
In baseball statistics, runs per nine innings (denoted by R/9) is a measure of a pitcher's effectiveness in preventing runs; calculated as: (9 x runs allowed) / (innings pitched).
[edit]
In baseball statistics, runs per nine innings (denoted by R/9) is a measure of a pitcher's effectiveness in preventing runs; calculated as: (9 x runs allowed) / (innings pitched).