I politely disagree. I believe that there is plenty to ID here. This is my thought process: First, the sparrow was seen in Ohio, so I will use the list of all know sparrow to occur in Ohio at least more than 5 times. First, the sparrow has a streaky back, getting rid of Fox and Black-throated (very unlikely). Next, the back of the bird is a majoriy very even, rich brown. This gets rid of American Tree, Field, Grasshopper, Henslow's, Nelson's, Vesper. Next we can see a little bit of gray in the middle of back, but just a little in the very middle upper back. Too little grey on the back to be Song, and we get rid of Swamp, Zonos (besides Harris's but what are the chances), Lark, Savannah, LeConte's (rare). At this point we have gotten rid of everything, but we can confirm Lincoln's more with a few other features. The middle back is streaky, and the showing wind feathers end with a black spot, but the rest are grey. If you really blow the pic up, you can see the streaks on the back thin out but continue onto the neck, and that the brown lightens up as it approaches the breast. Therefore my verdict is Lincoln. Also taking into the fact that this bird was skulking and deep in grass, that further backs up Lincoln.
Hope this helps!