Pulled two tomatoes from caged position 10, a Big Boy, with blossom end rot.  That they were red, small, and completely consumed with BER might mean the plant was rejecting them early which could be a good thing.  No other BER sighted so far.  Green tomatoes are getting big and none have any spots on them (knock on wood).  These next three weeks are the most critical and I think where all my major mistakes have taken place.  I am now watering mid-day as well as evening when temps exceed 90F, like today.  Next two days forecast close to 100F.