Hello from Kansas
The warm-season grasses are greening up. Spring rains and temps in the 60's and 70's are triggering the development of large patch in zoysiagrass (see photo). I have not seen or heard of symptoms of spring dead spot yet in bermudagrass but I'm sure that will be coming soon.
As for the cool-season grasses, a superintendent in south central KS reported some yellow patch (cool-season brown patch) in the putting greens. Late April is fairly late, but with our unusually cool, wet weather I'm not surprised that this disease has popped up. Another person reported some powdery mildew on tall fescue in the Kansas City area.