Pitcher Efficiency Average xwOBA by Year
Professional Baseball visualization – data from mlb.com
Tracks the average Expected Weighted On-Base Average (xwOBA) allowed by pitchers by year, reflecting expected performance based on contact quality.
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Pitcher Efficiency Average xwOBA by Year
Professional Baseball visualization – data from mlb.com
Tracks the average Expected Weighted On-Base Average (xwOBA) allowed by pitchers by year, reflecting expected performance based on contact quality.

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About This Insight
This interactive visualization provides tracks the average Expected Weighted On-Base Average (xwOBA) allowed by pitchers by year, reflecting expected performance based on contact quality.. Built from official mlb.com data, this insight is processed and verified by Spartera to ensure accuracy and reliability. Results are delivered on-demand — no subscriptions, no data dumps. You get exactly the insight you need, when you need it.
Who this is for
Data accuracy and methodology verified. Originally released September 25, 2025. Last updated May 4, 2026.
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Tracks the average Expected Weighted On-Base Average (xwOBA) allowed by pitchers by year, reflecting expected performance based on contact quality.
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