old_Attack Angle

Attack Angle is the direction the bat barrel is moving (up or down) at impact. A positive number would mean your barrel is going UP at impact, zero is LEVEL and a negative number is the barrel going DOWN at impact. 
Typically a well hit ball by a professional has an attack angle between +5 to +20. A typical ground ball/foul ball or pop up has a negative attack angle. A line drive typically has an attack angle between +5 to +20 and fly ball +20 or greater. 

For more information on Attack Angle standards, tips, as well as drills to improve, see our Training Center by Clicking Here.