Ben Popescu

BB/9 measures a pitcher's control by calculating the average walks allowed per nine innings, indicating efficiency and command of the strike zone in baseball.

Championship Win Probability Added quantifies a team's title chances by comparing pre-game and post-game odds, reflecting a single game's impact on championship prospects.

Defensive Runs Above Average measures a fielder or team's defensive performance by comparing actual runs allowed to expected runs, indicating above or below average defense.

Earned Run Average measures earned runs allowed by a pitcher per nine innings, providing insights into performance while excluding unearned runs from defensive errors.

FIP assesses a pitcher's performance by focusing on strikeouts, walks, hit batters, and home runs, providing a clearer evaluation of pitching effectiveness.

H/9 is a pitching metric estimating hits allowed over nine innings, aiding comparison between pitchers while highlighting contact management trends and predicting performance factors.

ISO measures a hitter's extra-base potential by calculating the difference between slugging percentage and batting average, focusing solely on doubles, triples, and home runs.

K/9 measures how many batters a pitcher strikes out in nine innings, enabling fair comparisons between starters and relievers regardless of innings pitched.

The strikeout-to-walk ratio measures a pitcher's control and effectiveness by comparing total strikeouts to total walks, with higher values indicating better performance.

wRAA quantifies a hitter's performance by comparing their weighted on-base average to league averages, estimating additional runs produced based on plate appearances. Negative values indicate below-average performance.