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Concept Library

Fantasy Baseball Glossary

Plain-English definitions · the metrics behind the digest

Closer Watch vs Committee — Bullpen Roles Explained

A locked closer owns the ninth-inning role; a watch is a closer whose grip is loosening; a committee means saves are being split between multiple relievers based on matchup.

OBP Risers — 14-Day On-Base Delta

Hitters whose 14-day on-base percentage has spiked relative to their season-to-date OBP — a fast signal of an emerging hot streak that's not yet priced into ownership percentages.

Fantasy Baseball Stash Strategy

Stashing is rostering a player who isn't producing today — usually a prospect, recovering injured starter, or near-call-up — because their expected future value is worth the ben…

Statcast Buy-Low Candidates

A buy-low candidate is a hitter whose Statcast metrics (xwOBA, xBA, xSLG) point to better hitting than their surface-level batting line shows — a target to add before the rest o…

Expected Weighted On-Base Average (xwOBA)

xwOBA is Statcast's prediction of a hitter's wOBA based on the quality of their batted-ball contact — exit velocity, launch angle, and sprint speed — instead of the actual outco…