Obstruction at First Base: Where's the Protection?

[Tru_in_Blu]

Originally Posted by Manny A

Is the BR protected between first and second due to the Obstruction at first base? Or was she only protected at first, and she lost that protection when she made her move toward second?

I choose "B".

Many times I'll hear a coach imploring his runner(s) to "go, go, go" at the first sign of an overthrow. Then they realize the defense was heads up and executed their backup responsibilities properly. Then it's "no, no, no".

Another assumption from the OP is that the BR did manage to touch the base while tumbling after the collision. While perhaps not relevant to the immediate discussion, an OBS runner is still required to touch the base(s).