[Mr Rick]

I am calling this down.

There are 8 big bets in at this point so its about 4.5:1 to call through the river assuming both other players fold and BB bets the river too.

This is a smart play by BB with a weaker A because you aren't likely to raise him with 88 on the board. He is calling your two bets anyway - if he were to check - and he gains if you have a PP and were going to check behind on the turn - or, of course, if he gets you to fold a bigger A.

Having said that, there are some players I will fold to in this situation - but I would have to know them well or be making a read at the time. Your read makes it closer but I would still call.