Whose call?

[Ref_in_Rehab]

My understanding of the lead coming strong side...

In the mechanics book it shows the lead coming strong side to help keep on eye on post play.

If there was some action in the post that required lead to cross the key, then yes, the lead could have (and should have) made that call.

Otherwise, they way I read the situation, A1 drove from Trail's primary to the baseline and there was a crash at the block on that same side of the key (still Trail's primary) and it should be Trail's call all the way....if he doesn't get it and Lead sees the obvious foul, Lead can clean it up