[Alberta's Child]

That's a good point. Umpires rarely ask for help making calls like unless there's a good reason for it. The times I've seen it happen almost always involve a case where two things happen at the same time and the umpire who is tasked with making the call may not be in a position to make the call without help.

I've seen it a few times on plays at home plate -- involving a home plate umpire who basically turns to another umpire and says something to this effect: "I know the runner arrived at the plate ahead of the throw, but when he slid past the plate my view was blocked by the catcher and I didn't see whether he touched the plate."

If the home plate umpire knows one thing (the runner arrived ahead of the tag) and the other umpire confirms the other (the runner did, in fact, touch home plate), then the correct call will be made after they meet to discuss it.

[Uncle Ike]

” Umpires rarely ask for help making calls like unless there’s a good reason for it. “

Batters and catchers can appeal a ‘check-swing’ call to the 1st or 3rd-base umpire, whichever has the better view...

As far as I know, that’s the only case where a player can appeal to change a call....