FB%
Fly-ball rate — share of batted balls hit in the air.
What FB% means
League average is roughly 36%. Fly balls carry all of the home-run upside and most of the out-making downside; pair this with barrel rate before deciding which one a hitter is getting.
What counts as a good FB%
Higher is better — roughly .280 is poor, .360 average, .410 good, and .460 or better elite.
Also written
fly_ball_pct · flyball_pct · fly_ball_rate · fly_ball · fly
Source
Statcast