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AI Advanced Metrics
Metrics Breakdown and Definitions

To better understand the AI-powered performance breakdown, this page provides metric definitions and tailored insights for each batting scenario, including tee work, BP, and live game action.

Key Takeaways

Use xwOBA to evaluate overall offensive value.

Use FB/LD and EV50 for understanding how hard a player can drive the ball.

Use xBA and SwSp% for consistency and contact quality.

Use GB/FB Ratio to understand swing plane and mechanical tendencies.
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Efficient contact, low value
(Maybe work on generating more lift and power.)
xBA > xwOBA
Productive approach with extra-base value.
Expected for productive hitters.
xBA < xwOBA
Power without control.
High EV + Low SwSp%
Power not showing up in air contact.
FB/LD < EV50
Summary of swings
provides a clear overview of the section
and highlights key performance details.
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a critical measure of power, typically averages 88 mph in MLB, with elite hitters exceeding 95 mph in live play but often achieving higher values in tee or BP scenarios (MLB Statcast)
Average Exit velocity
establishes sample size and reliability, which is essential for robust analysis.​
Total swings
Launch Angle
EV50
optimal at 10–25 degrees for line drives, highlights trajectory tendencies.



measures how hard a player hits their best-contact balls. It reflects the true power behind well-struck swings. By averaging the hardest-hit 50% of balls, EV50 highlights a player’s peak potential.

Hit classification
Elite line-drive hitters typically aim for a line-drive percentage of around 25–30% (Baseball Savant). The percentage of ground balls and fly balls also reveals a batter’s tendencies.
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Game
Live BP
Soft / Front Toss
Tee ball




SwSp% | xBA | xwOBA
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A sweet spot percentage of 32–40%, corresponding to launch angles between 8–32 degrees, aligns with optimal contact zones and is often more consistent in controlled practice settings. Predictive metrics like xBA, which averages around .300 for elite hitters, and xwOBA, with a league average of approximately .320, evaluate success based on contact quality and extra-base potential (Statcast).

xwOBA
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​Game
.290
.320
.370
.400
SwSp%

40%
37.5%
36%
34%
32.5%
Aim for 30% ~ 40%
Aim for 40% ~ 50%
​Game
Live BP
Soft / Front Toss
Tee work
Aim for exceeding 50%
xBA

.320
.280
.250
.200
Aim for .350% ~ .500%
Aim for .250% ~ .400%
​Game
Live BP
Soft / Front Toss
Tee work
Aim for .400% ~ .600%

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GB/FB ratios help reveal a batter’s contact tendencies. Values above 1.4 indicate a ground-ball leaning approach, 0.6 to 1.4 suggest more balanced contact, and values below 0.6 point to a fly-ball oriented profile. These patterns provide insight into the batter’s swing path and overall approach at the plate.
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​EV / LA consistency illustrated in simplified distribution charts, provide insights into swing stability, while FB/LD EV, averaging ~94 mph in MLB, reflects productive power potential.
EV / LA consistency are simplified charts showing their distributions. Gray bars represent outliers.
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FB/LD is average EV of a player's fly balls and line drives. It typically falls between a player's overall average EV and EV50, though for elite hitters, it can occasionally exceed EV50.
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Session Snapshots
shows three swing analysis from today’s session, highlighting the average, top-line, and bottom-line performances
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Together, these metrics empower players to diagnose and refine their mechanics, improve consistency, and maximize situational effectiveness.