Is this right ?

[CecilOne]

Originally Posted by Dakota

An illegal pitch during the preliminaries should be called immediately, and should not be a delayed dead ball (e.g. taking the plate with hands together, etc.)

A pitch that starts and then becomes illegal is a DDB and the pitch is allowed to complete.

The OP is presumably about HS rules ("HS meeting"), so correct for NFHS. Some IP do not require a dead ball (6-1-1, 6-2-2, 6-2-3), so the IP is immediate, the ball is dead immediately; and anything the runner does after the infraction is immaterial.

That means the IP penalty is enforced and even the early leaving runner is advanced. If the runner left before the infraction, runner is out, IDB or DDB.

If the OP was about ASA, I yield the floor to Tom, Mike et al.