It's tough to discern from the distance in the pics, but my first effort would be to apply a shot of water soluble N. If the problem clears up, then there's the issue. It's not uncommon for plants to use all the available N, especially in a space with good drainage, as N readily washes out. Don't use too much, just enough to stall the entire plant from having a serious deficiency.

It could be other issues, but this is easiest to correct.

I give them weekly CaN snack. And they wilted from the top first. Just cut off all yellow but it is uniform, clean

You said a uniform yellowing, and the pics aren't detailed enough to tell, but I think I see green veins in the first pic. If so, you might try a shot of Mg. Adding Ca every week could be messing with the Mg/Ca ratio.

Again, that's just the next rung on the 'ladder of what's wrong?'

ETA: also, check images of iron deficiency. Similar to Mg, but more uniform yellowing in the margins.

only plants in wet spots show the yellowing. And it starts with young leaves wilting during the hot days then yellow shows up then it dries. More like water problem

I misread your initial post.

"all the affected plants are located in the spots that not drained well."

For whatever reason, perhaps grammar, I thought it said 'that had drained well.'

tigrikt (Central NJ)(6B)

I give them weekly CaN snack. And they wilted from the top first. Just cut off all yellow but it is uniform, clean

------------------------------------------

Plant don't need too much Calcium. It may block or retard intake of some other elements. I would feed them with other water soluble fertilizer , like MG.

Also give them some Epsom salt.

Sey

tigrikt: I cut off to check for brown strikes but didnt find any.

The browning would be visible in major stems but not usually in the leaf pertioles. It's hard to confirm unless you can sacrifice a major stem or you're ready to pull the plant.

Cut one of the major stems - no browning. CaN - last time was given 2 weeks ago (1 tsp), i checked my notes. It is end of the season, i will let it slide, have enough tomatoes. It started when temps got to 97f for a couple of days. I saw wilting on the top on the new growth and decided to add water. I did check the soil under, it was cool and damp after the finger length but i thought i would add more as forecast was 40%. In reality, we had tstorms daily and the area of concerned was flooded.

Thank you everyone

Yeah, hard to be a deficiency only on one part of the plant. Same for water logging. More likely a disease of sorts, but I don't know what. Most plants seem to still be doing ok overall at least.

Like Sey says, I think it is a Mg deficiency because of the added CaN. Dose it with Epsom Salts.

Overwatering after all. It has been about 10 days w/o rain, the yellow dried up and NO new yellow showed up. Thanks everyone.