MLB Moonshot Glossary

A simple explanation of the metrics shown on the Moonshot Model table.

• Avg Best EV: The hitter’s average top-end exit velocity when he connects especially well.
• Swing Speed: The hitter’s average bat speed in miles per hour.
• Fast Swing %: The percentage of tracked swings classified as fast.
• Barrel %: How often the hitter produces the ideal exit-velocity and launch-angle combination.
• Blasts %: How often the hitter pairs a fast swing with squared-up contact.
• Pitcher EV Allowed: The average exit velocity the opposing pitcher allows.
• Pitcher HH % Allowed: How often the pitcher allows batted balls hit at least 95 mph.
• Pitcher Barrel % Allowed: How often the pitcher allows barrel-quality contact.
• Moonshot Prob %: TDE’s estimated chance that the player hits a home run traveling at least 420 feet.
• Model Odds: The Moonshot probability converted into fair American odds.