I have tried to match this up with pictures on the Internet but have been unsuccessful.
Please tell me what is going on here.
environmental stress. Perhaps it was windy recently? Or extra warm?
Thanks for the info.
Having given this some thought, I think you are right. We have had a lot of rain and in addition, one night approached very near freezing here in the Louisville area.
They look like they may have been hit by hail or sleet. It's a possibility.
Hail or sleet would cause holes. This is burning of the leaves whether it be wind or extreme heat/cold.