North central Illinois, zone 5a.
Our apartment building lawn has taken accidental damage over the last couple of years. Cars repeatedly driving off the driveway and Roundup was accidental sprayed in many spots. All of these bare spots were not repaired soon enough or were damaged again. Anyway, there is a weed that is taking over in many areas. I can't tell if it is crabgrass, bermuda grass, or something else. I did see some red color at the base of some stems, but I don't think it was enough to say that this is foxtail.
The picture of the big clump basically came from one root stem, but the root didn't come out when I pulled. If a different or better picture is needed, let me know.