Some time ago I went through my database searching for batted balls that produce the greatest offensive benefit. I settled on a range of vertical launch angles between 21 and 36 degrees. This range of angles accounts for the majority of home runs and extra base hits, and are generally among the most valuable batted balls.
Balls hit between 21 and 36°
|
BIP |
H |
1B |
2B |
3B |
HR |
SF |
Stats |
88200 |
35672 |
8438 |
8330 |
1446 |
17458 |
2406 |
% of Total |
19.5% |
22.5% |
8.2% |
26.2% |
41.5% |
84.5% |
50.7% |
AVG |
SLG |
BABIP |
wOBA |
.416 |
1.158 |
.258 |
.632 |
All BIP with a measured Exit Velocity.
This excludes roughly 15% of BIP from analysis
These are the most valuable balls, and this is, generally speaking you want to see batters maxing out balls on these angles and pitchers minimizing them. In the traditional sense, this range encompasses “fly balls”, as you would see reported on Fangraphs (FB%), but some sources consider balls hit between 20 and 25 degrees to be line drives. Either way, this is an important range. This isn’t ground breaking material, but you may not be familiar with it being described in terms of angles.
We know home run rate went up dramatically in 2016, at least in part due to an increased average exit velocity. However, this home run surge took place almost entirely for balls with a launch angle between 25 and 36 degrees. Balls hit above and below this launch window saw little to no increase. Alan Nathan wrote a relevant article which I encourage you to read. Read the rest of this entry »