A New ‘Era’ of Measurement

The Most Important Point in This Article Can Be Summed up in Just One Sentence: You Should Be Using xFIP to Evaluate How Well a Pitcher Has Pitched, Rather Than Using Era. Another Way to Say That Is That xFIP Is a Better Predictor of Future Era Than Past Era Is.

Xfip Is a Statistic That Uses the Parts of a Pitcher’s Performance That a Pitcher Is Primarily Responsible for to Measure How Well a Pitcher Pitched. for the Most Part, Research Has Shown That Pitchers Have a Great Deal of Control over Strikeouts, Walks, and Home Runs, While Other Aspects of Their Performance Are Primarily (Although Not Entirely) Outside of the Pitchers Control. Further, the Primary Means by Which Pitchers Control Home Runs Is Through Their Ground Ball Rate. So by Creating a Statistic Based Entirely on Strikeout Rate, Walk Rate, and Groundball Rate, We Get a Much Better Predictor of Future Performance. xFIP Is That Statistic, and It Largely Eliminates the Influence of Defense, Park, and Random Chance on Our Evaluation of Pitching Performance.

Using Advanced Metrics to Effect Pitching Quality

By Marcus Vance

• Oct 8, 2026 • 4 min read

Using Advanced Metrics to Effect Pitching Quality

Direct Answer • Key Takeaway

In Addition to a Full Time Job as a Software Product Manager, Alex Zelvin Works Part Time for Fanduel. Com (Zoobird on Fanduel) and Co-Owns Dailybaseballdata. Com

Marcus Vance

Cybersecurity & Digital Privacy Researcher

Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.

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