OBS or Tag Up

[MD Longhorn]

I would not go inside on this particular play unless I noticed my partner staying at home (he shouldn't, but it could happen). It makes your tag-up angle at 2nd worse, and takes BR completely out of your vision. If you're at B, and take a few steps toward 2nd (toward whatever angle on the catch and 2nd base you feel is ideal for you), you can glance at 1st base for the touch and possible OBS. Obviously, if BR's approach of first base coincides with the catch, you aren't going to get it except for VERY peripherally (and maybe not even that), but at least you're in the best spot for the tag AND for possibly checking 1st base.

Also, I should note to the OP... Many good teams have a coach watching the umpires. There may not have been OBS on the play you're talking about at all... but when the coach noticed that you didn't look over - he went out to ask you about it, knowing you didn't see it and would likely believe him - and hoping that you might do something about it.