Great photos!

That lizard looks like a six-lined racerunner(Cnemidophorus sexlineatus sexlineatus) to me. They are the only racerunner in Tenn.

They are extreamely quick. Six-lined are distinguishable from skinks and similar looking lizards by the larger scales in the belly area. Here are some pics of one that I caught a while back.

http://danielhillreptiles.com/Post%2...acerunner1.jpg
http://danielhillreptiles.com/Post%2...acerunner2.jpg