MLB Bullpen Usage and Fatigue Data for Run Prevention Research

A dataset for researching the relationship between Major League Baseball bullpen workload and late-inning run prevention. It was created by Karmane and last updated on Hugging Face on July 10, 2026. The data likely contains metrics such as reliever reuse counts and rolling bullpen workload to assess team bullpen freshness.

Use Cases

• Screen MLB teams for bullpen fatigue based on reliever reuse counts mentioned in the description.
• Investigate historical trends in bullpen freshness using rolling workload metrics described in the dataset.
• Compare team strategies for late-inning run prevention based on pre-game bullpen condition.
• Build dashboards for visualizing bullpen workload and its correlation with game outcomes.

Strengths

• Dataset is focused on a specific research question regarding bullpen fatigue and run prevention.
• Last update timestamp is precisely recorded as 2026-07-10 13:49:12.

Limitations

• Row count, column definitions, and file formats are unknown, which limits suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Hugging Face, author Karmane.

Collection Method

Likely compiled from MLB game and player statistics, but the specific gathering method is not detailed.

Freshness

Last updated 2026-07-10 13:49:12; freshness should be verified.

Geography

Major League Baseball (United States and Canada).