When are they out?

[IRISHMAFIA]

Originally Posted by NYBLUE

There is a signal (2 fingers across the wrist) that I assumed most of umpires used to indicate runner(s) in scoring position with 2 outs.
Recieving and mirroring this signal prior to the pitch or AB reminds:
- The BU to vocalize his out immediately when the tag occurs
- The PU to listen for the BU's out while watching the runner attempting to score.

Do many of you know of and/or use this signal?

I am aware of it, but don't use it. I do not consider it necessary. I also do not rely on sound. The mechanic is unreliable and cannot replace watching the play.