Baseball Savant defines types of batted balls by their launch angles:
- Less than 10 degrees: ground ball
- 10-25 degrees: line drive
- 25-50 degrees: fly ball
Although it could be argued that batted balls launched between 20 and 25 degrees have characteristics of both line drives and fly balls, in that range exit velocity becomes more significant. Let’s stick with the existing definition.
Based on launch angle, batted balls in the sweet spot for homers are by definition fly balls, despite some disagreement on where the sweet spot is.