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Sabermetrics

4 articles

Editorial illustration for SIERA vs. xFIP vs. ERA: Why Batted Ball Data Makes SIERA the Sharpest Skill Test for Pitchers
Diamond Digest

SIERA vs. xFIP vs. ERA: Why Batted Ball Data Makes SIERA the Sharpest Skill Test for Pitchers

Traditional ERA is a noisy, results-based statistic influenced by factors outside a pitcher's control. Advanced metrics like xFIP and SIERA offer better insights into a pitcher's true skill, with SIERA being the sharpest test due to its consideration of batted ball quality.

Marco Moretti·October 29, 2026
Editorial illustration for How MLB's Shift Ban Reshaped Hitting: A Statistical Look
Diamond Digest

How MLB's Shift Ban Reshaped Hitting: A Statistical Look

Major League Baseball's 2023 rule changes limiting defensive shifts aimed to boost offense by increasing hits. Statistical analysis from 2022 shows these shifts significantly suppressed batting averages, particularly for left-handed hitters, justifying the league's intervention.

Marco Moretti·October 6, 2026
Editorial illustration for How MLB Front Offices Leverage Sabermetrics for Smarter Roster Decisions
Diamond Digest

How MLB Front Offices Leverage Sabermetrics for Smarter Roster Decisions

Major League Baseball front offices now heavily rely on advanced sabermetrics like WAR, FIP, wOBA, and OPS to make smarter player evaluation and roster construction decisions. These data-driven tools offer a competitive edge, though understanding their nuances and limitations remains crucial.

Marco Moretti·September 29, 2026
A baseball game scene with data visualizations on the scoreboard, symbolizing the impact of sabermetrics on modern baseball strategy.
Diamond Digest

Sabermetrics: How the Search for Objective Baseball Knowledge Rewrote the Game

Sabermetrics is the data-driven study of baseball that has fundamentally reshaped how teams evaluate players and make strategic decisions. Pioneered by Bill James, this empirical approach prioritizes objective measurement over traditional scouting wisdom, becoming essential for modern competitiveness.

Marco Moretti·June 21, 2026