Glossary

Barrels - a batted ball of at least 98 mph exit velocity, with a launch angle of 26-30 degrees. For every MPH over 98, the range of acceptable launch angles increases. ***NOTE: There will be a slight difference in Statcast barrel numbers, and Blast Report barrel numbers. This is because the Blast Report's barrel formula expands per MPH of exit velocity as a non-round number***

Blasts - a subset of barrels, with a more narrow classification window. A blast coincides with even better offensive results than a regular "barrel" (which are also really good!) Credit to baseball writer Alex Chamberlain for the idea.

L5 100+ EV - the amount of balls a player has put into play that had an exit velocity of 100+ MPH, over the last 5 days.

L5 > 350ft - the amount of balls a player has put into play that have travelled at least 350ft, over the last 5 days.

+Swing - this is still being worked on, but essentially, it is the amount of swings where a player has combined both strong bat speed, and efficient contact.

Air % - the percentage of batted balls that end up being in the air (flyball, line drive, popup).

Pull Air % - the percentage of batted balls that are both in the air, but also pulled. Baseball Savant indicates this is directly tied to significantly better offensive outcomes and homeruns.

Pulled Barrel % - the percentage of batted balls that are both barreled, and pulled. I just made this stat up cause I thought it'd be interesting. More study to come on this.