Overthrow Clarification

[IRISHMAFIA]

Originally Posted by BretMan

It's for when a fielder has possession of the ball and then something other than a throw causes it to go out of play.

An example I've often heard: Runner coming into third base. F5 catches the ball and goes to apply a tag. On the tag, the ball pops out of the fielder's glove and rolls out of play.

This is correct. There are numerous ways this could happen where the players loses control of the ball without a throw. A couple could include a sweep tag, ball being dislodged throw contact with a runner, base or ground, etc.