OOTP Advanced Metrics - README #

This document provides an overview of the custom advanced metrics implemented in the OOTP Advanced Stats Tool, including both original and adapted sabermetric concepts. These metrics help analyze players beyond what OOTP provides, giving deeper insight into performance and potential.

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Pitching Metrics #

1. xERA (Expected ERA) #

• Expected ERA based on FIP, HR/9, BB/9, K/9, and LOB%.
• Provides a fielding-independent measure of a pitcher’s actual run prevention skill.

2. xFIP (Expected Fielding Independent Pitching) #

• Similar to FIP but normalizes home run rates to expected league averages.
• More predictive than standard FIP for evaluating future performance.

3. DOMS (Dominance Score) #

• A proprietary metric combining K/9, SwStr%, and Stuff+ to measure how overpowering a pitcher is.

4. ChE% (Chase Efficiency) #

• Measures how often batters chase pitches outside the zone.
• Derived from BB% and Control rating.

5. True WHIP #

• Adjusted WHIP that accounts for hit suppression ability and BABIP luck correction.

6. High Lev PWR% (High-Leverage Power Rate) #

• Measures home runs and extra-base hits allowed in high-leverage situations.
• Uses HR/9 and leverage index to weigh clutch performance.

7. SwStr% (Swinging Strike Rate) #

• The percentage of total pitches that result in swings and misses.
• Derived from K% and Stuff rating.

8. ↓tK-BB% (True K-BB%) #

• A refined strikeout-to-walk ratio that incorporates Command rating and park-adjusted walk rates.

9. LIE (Leverage Index Efficiency) #

• Measures how well a pitcher performs in high-pressure situations.
• A combination of LOB%, WPA, and leverage-adjusted ERA.

10. ESC% (Escape Rate) #

• The percentage of runners stranded by a pitcher after allowing a baserunner.
• Derived from LOB%, GB%, and Strikeout Ability.

11. K/IP (Strikeouts per Inning) #

• A more granular measure of a pitcher’s ability to generate strikeouts per inning pitched.

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Hitting Metrics #

12. xBA (Expected Batting Average) #

• Estimates batting average based on contact%, BABIP, and power indicators.

13. xSLG (Expected Slugging Percentage) #

• Adjusted SLG that accounts for exit velocity, power rating, and HR/PA.

14. xwOBA (Expected Weighted On-Base Average) #

• Uses OBP, SLG, and BABIP to approximate expected offensive contribution.

15. xOPS+ (Expected OPS Plus) #

• Normalizes OPS for park effects and adjusts for expected contact quality.

16. Contact+ #

• A normalized contact rating that incorporates avoid-K, BABIP, and gap power.

17. True ISO #

• Adjusted ISO (Isolated Power) that includes HR/PA and expected doubles rate.

18. Plate Skills #

• An aggregate of BB%, K%, Eye rating, and Chase Rate to measure batting discipline.

19. Chase% #

• Percentage of swings at out-of-zone pitches.
• Derived from Eye rating and BB%.

20. BIP% (Balls in Play Rate) #

• Measures how often a batter puts the ball in play (excludes K and BB outcomes).

21. Barrel% #

• The percentage of batted balls classified as barrels (high exit velocity & optimal launch angle).
• Estimated using ISO, HR/PA, and power rating.

22. xHR% (Expected Home Run Rate) #

• Home run probability based on ISO, flyball%, and HR/FB rate.

23. RPE (Run Production Efficiency) #

• Measures how effectively a hitter converts opportunities into runs.
• Incorporates wOBA, RBI%, and clutch hitting performance.

24. True wOBA #

• An improved version of wOBA, incorporating park effects and expected contact.

25. Clutch Index #

• Evaluates a batter’s performance in high-leverage situations.
• Uses WPA, late-inning OPS, and high-lev PAs.

26. PSN (Positional Scoring Normalization) #

• Adjusts offensive performance based on league-wide averages for a given position.

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Future Development #

• Potential additions include park-adjusted metrics, more defensive analytics, and predictive modeling based on historical performance.