Hi there, We have some brown patched that have shown up seemingly overnight, but it took about a week to notice in our turf. We had started mowing this spring and the first 2 cutting went well and everything was green. On our 3rd attempt we noticed the turf was turning brown in patches. It is at a couple of our schools that have new turf pieces after some remodels and new construction. I have attached some pics. I would appreciate any help in identification so we can treat or not?? Thanks for your time!!