Photo showing the stunted roma amongst the healthy ones.

Here is the grape tomato. You can see the healthy growth at the bottom, with lighter green, browning leaves on top.

A closer image.

Helllloooooo, anybody out there?

Update: The roma continues to curl up. The little green tomatoes are turning white. While the rest have grown considerably, the roma has not grown at all.

The grape tomato plant is still brown on top, with some leaf curl at the bottom. I've been giving it extra water, in case it was just parched from a dead spot in my watering system, but that doesn't seem to have helped much. I pruned back much of the brown top, but it's not growing much.

Any ideas still appreciated.