[AtlUmpSteve]

I also don't do anything differently as the base ump, other than attempt to have some idea if the out occurred before the run scored, to assist if asked. You can't, as noted above, make the call before being sure the out is made; but you do know if you ruled on a clean initial tag, or a slide-by with a late tag.

As plate umpire, go with what you believe to be true, based on what you know. Other than a multi-angle replay like MLB TV, no one is even paying as much attention as you, they are all watching the play and the call at third base, anyway; and the we aren't talking about you blowing the obvious ones. Go with your call, and if asked by the opposing coach, do get together with the BU to be sure you didn't disallow a run based on an initial tag that wasn't the actual out.