I realize it's a little early to start this thread, but it's time to start exchanging information. Please provide at least a general description of the location of the activity.
Super early on Saturday morning (9/21), I was walking into my spot in Chesapeake for the urban archery season. I clearly heard two bucks fighting in the distance. It was very loud and very distinct. They would hook antlers for a solid 10-20 seconds, and then go quiet for a while. About 1-3 minutes later, antlers would crash together again for another round. This went on for about 10 minutes.
For what it's worth, it did not sound like two little dink bucks sparring back-and-forth. This sounded like full-on, I-hate-your-guts fighting.
I was somewhat surprised to hear this kind of fighting so early in the year. Nevertheless, there it is.
In related news, I have not seen anything moving during the day. Frustrating, to say the least.