Unlocking MLB’s Hidden Secrets: What Advanced Leaderboards Reveal That Could Change the Game Forever
Glossary of Metrics
- Strike+ – Measures the ability of the pitcher to generate swings and misses and get called strikes compared to league average (100). Adjusted by pitch type.
- Whiff+ – Measures the ability of the pitcher to generate swings and misses compared to league average (100). Adjusted by pitch type.
- Command+ – Measures the ability of the pitcher to throw the pitch in his intended area. Adjusted by pitch type. League average: 100.
- xK% – Expected strikeout percentage.
- xBB% – Expected walk percentage.
- Total RV – Cumulative value of contact+, discipline+ and BIP+ generated throughout the season.
- RV – Rate version of total RV (per plate appearance); 100 is the league average.
- Contact+ – Adjusted contact rate relative to the league average (100). This takes into account location and movement.
- Disc+ – Measures a hitter’s ability to lay off pitches outside of the zone and swing at pitches in the zone. It does not take contact into consideration. League average: 100.
- BIP+ – Ball in play quality. Uses batted ball numbers and accounts for shifts, spray angle, and running speed of the batter. League average: 100.
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