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Bat Speed Estimates:
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Assumes "sweet spot" collision efficiency (0.2) for all barrels and 10% of pitch speed at release lost between release and contact. Takes all hitter barrels, estimates bat speed with those parameters, and averages by player.
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Collision Efficiency Estimates:
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Assumes that average bat speed is constant. Calculates estimated collision efficiency based on average bat speed and 90% of pitch release speed
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