Sod laid out a few months ago. Tall Fescue. My FIL put it in (without much prep work or any thing).
No fertilizer has been put in, but it's been hot close to 100F here (San Diego, but east of the I-5) the past few months, so I didn't want to fertilize.
This is just one spot. We've had it in other areas as well. This spot grew quite big in one day.
EDIT: I have to add that the spot is pretty big. So perhaps not dollar spot. It's 10" in diameter or so.