![in or out - USA Pickleball in or out](https://usapickleball.org/wp-content/uploads/2013/09/in-or-out1.jpg)
From the above diagram, you can see there is a fine line for determining if a ball is actually ‘in’ or ‘out’. The rule is that if you can see a gap between the ball and the line, the ball is ‘out’. If you do not see a gap and can’t determine if the ball is out, call it ‘in’.