Large caps 4" wide, fleshy and kinda floppy, fragile when handled, maybe getting a little old, the one on the right split when I handled it. Stalk is white with vertical fibration, streaked pinkish brown from spores, 2.5" long, a little bulbous at base, kinda tapering in the middle. Salmon spores, gills fleshy and pinkish (next photo). Gills are free and big. Cap is grayish brown, darker in center with slight knob. I thought at first this was Entoloma but now I'm thinking it's a Pluteus cervinus, but can the cap be this light of a color???
Was growing on grassy ground adjacent to a stump. It surprised me to see it in a heavily used park but fairly intact, until I handled it and it kinda fell apart.