Some of it looks like mechanical damage (being banged around by something) and some of it looks like rose slug damage. Check the backs of the leaves with small holes in them for tiny repeat tiny green caterpillar type creatures. Smash if found.

Ok great thanks so much!

Does the rest of the bush look ok? Albeit a little dry? lol

Ok. Great to know. Thanks guys!

Could this also have been caused by frost? It got warm here then had a unseasonably freakish morning or so of frost

I wouldn't think it was frost damage, midorit. Frost tends to darken the damaged area first (think "bruised"), then it make it nice and brown and crispy over time. Frost also would affect whole areas of the leaf, not just discrete, sharply defined tears and scars.

Thanks so much.

Gosh. So this was my rose on April 22

Now it looks like this:

Now I under watered it in the beginning I think a bit. Learning curve: it got dry-fast.

Then it's been raining, flooding even, for days and days now so the Rose had the opposite problem lol. It looked really bleak. Sun came out a bit today and now some new baby roses on her are starting to open. Will she spring back?

Btw, Is it normal for knockouts to have periods where they have no flowers for a week?

midorit, ALL roses go through rest periods between what are known as "flushes" of bloom, and even though Knockouts are known for fairly continuous bloom, even they have down periods. And yours has been going through some trauma and stress. Don't overthink it, and don't kill it with love, lol. Keep it moist, not wet, and let it recuperate a while. Consider it normal for your rose to rest up to several weeks between flushes, depending on its health and the weather. When it finishes each flush, you can fertilize with a good rose fertilizer according to directions. Epsoma Rose-tone is good for long term health; a granular food is good for a quick boost. DON'T overuse the granular, it can burn the roots. But there are as many types of rose food as there are rose growers, lol. A time-release food works, too, and it's harder to overdo it.

By the way, if that pot is sitting directly on the ground, it won't drain properly and you'll eventually cause the roots to rot. Raise it up on pot feet (or anything solid to get it off the ground) so the drain hole is unobstructed. Any Home Depot or Lowe's carries the nice terra cotta pot feet.