the "bump" at first base

[CecilOne]

Originally Posted by Tru_in_Blu

On a clean base hit to left field, BR is taking the path around 1B to touch the inside of the bag and make a move to 2B. While rounding, she's OBS by F3. But this time the BR pushes F3 out of the way. F3 may end up: a) taking a couple of steps to recover her balance; or b) a$$ over teakettle and on the ground.

So we have OBS to start. Do we have anything else?

OBS to start, yes.
The push can either be UC or nothing, depending on whether intentional/vindictive or just trying to get past F3.