Slime mold coming!
Rain much? I saw this in my front lawn today. Slime mold appears after long periods of daily rain(NOW). They are not actually a turfgrass disease. The (grey, black, tan) spores just hang out on leaf blades until sun dries them. The leaves can yellow a slightly and temporarily slightly from shading of leaf blade, but no problem. Sorry, can’t figure how to rotate first pic!