That plant looks good to me, I'd have no problem eating its fruit.

Yep, you're fine.

If there were any problems, it would have shown long time ago.
I second : your plant is just fine.

Thanks for the follow-up posts.

Here is one more picture of how the leaves look on the Mortgage Lifter.

There is a lot of clay in the soil, so I'm very curious if the Roundup residue is still present and getting sucked up into the plant.

The plant in the background is a Black Krim - there are zero signs of any leaves pointing downward on this plant(although it is a lot further away from where I sprayed the Roundup.

There's nothing wrong with that leaf. It's not supposed to look the leaves on a BK plant.

You need to relax & enjoy your plants.

Yep, relax and quit making a problem exist. Plants perk up and then wilt and then perk up again as they normally grow. It's just the way nature works. Don't make it an issue friend.

DO NOT WORRY about BK leaf roll.
I have one, I know first hand that it is one of the characteristics of BK. I have researched this and seems to be normal.

Pesticide sensitivity of tomato plant IS CLAIMED TO BE via the air not through the soil. UNLESS you pour Roundup next to its stem.

Thanks for all of the replies - all good news.

I'm not sure what the difference is between herbicide exposure on the leaves versus root exposure (if there was actually any), but sounds like I don't have anything to worry about.

Tomato plant is perhaps the most sensitive garden plant.

I have a soil sensitivity experience with tomatoes:
Years ago i just started a garden right under the canopy of a black walnut tree, Among other things, I also planted tomatoes. A few week later one of them wilted(and died). Somebody suggested that maybe I over fertilized it. But I knew I dad not. Anyway, few days later the other one also wilted and died.
Then I found out that there is a substance, in the roots, leaves , and barks of black walnut(I think called juglanol ?) that acts like herbicide on certain plants, including tomatoes AND its own seedlings.
Of all the things I planted in that garden, ONLY tomatoes wilted and died.

It's a good idea to know how various herbicides act on different plants. In the case with Roundup you need to have the actual herbicide contact the green plant. I spray roundup between tomato rows of hundreds of plants all the time using what I call "Precision spraying" on a calm day and I never killed a plant yet; caused a few leaf tips to turn yellow at most. Some here might argue the residue issue but that's their unfounded view. With many other herbicides the mode of activity varies.