Never seen a second rut. Once the first week of December is over in Middle Tennessee, just seeing a deer can become tough much less a mature buck.
I've lived here 6yrs and haven't yet not seen a second rut. We're in January & the season is over, and bucks are still hounding does.
This broken rack buck on left was chasing does. Right before he arrived there were a bunch of does trotting through. It's only a still image but you can see his demeanor.
The stud in the right side pic was also chasing. Behind him was a smaller buck who was also trailing. Same as first pic, they were following a group of does. Neither buck in the pics have been residents on the property this season. They both showed up for a few days, chased does, then left again. This type of activity happens first & second week of November, then again the week of new year & week after. I've seen sporadic chasing all the way up into March. My favorite thing about it is that the second rut is generally a completely different batch of bucks, so it's almost like hunting season starting over. Been this way since I've lived here. Manchester, Coffee Co., about 30 miles south of Murfreesboro.