EV
Exit velocity — how hard the ball came off the bat (mph).
What EV means
Measured at impact. League-wide average ~89 mph. Sustained ≥ 92 is elite; "barrel" range is 95+ at ideal angles.
What counts as a good EV
Higher is better — roughly 87 is poor, 89 average, 91 good, and 93 or better elite.
Also written
exit_velo · launch_speed · exit_velocity · exit_velo_avg · avg_ev · avg_exit_velo
Source
Statcast