For something like that plant, which doesn't have an identifying feature that stands out strongly in some way (such as a particular bloom, fruit, etc.) I think we are fooling ourselves thinking we can ID it from a distant picture like that. There are just too many possibilities. It takes closer examination to determine what it really is.
And we don't have all the information - For instance, if he has or hasn't mowed this year makes a tremendous difference. If he hasn't mowed, there is no way that could be a clump of Orchard Grass, because we would be seeing tall stems and a spent seed head at this time of year. If it has been mowed then it becomes a possibility - but then we must ask ourselves how long ago and how low.... How much does a particular cool season grass rebound in the hot summer months.... Every question leads to another one.... Closer examination using identifying features (such as Massey mentioned) become the key to making a proper identification.
Without this, we may indeed guess at it and get it right, but we may indeed guess at it and be wrong. For me that isn't good enough. If something is worth knowing, it's worth accuracy.
Like J said, deer will browse a multitude of plants (including sedge and grass) when they are young and tender, but abandon them later.
There is one way you can know for sure what it is - put a cage around a clump and watch it for a whole year. The seed head and other identifying features will tell the tale. Orchard Grass gets taller than KY31 Fescue and makes a seed head about the same time. In fact, I think that is what you should do dogghr - cage it and report back when it becomes apparent what it is. It will become apparent given enough time to grow. Or, take close up, high quality pictures from different angles at key locations on the plant. That is the way the "experts" do it. But, even then, we still may have questions.