The Roma tomatoes are ripening and many of the bottoms look like this....

I believe it has/had some speck, although the new growth has shown no ill effects/spotting.

I treat once a week with a liberal dosing of Cal_mag diluted as recommended. It is in organic compost and grade A top soil in a raised bed that I water every morning around 5 AM. None of the other 5 tomato plants in the 4' x 8' raised bed show any issues at all.