For my thoughts:

I don't see Lexington having much difficulty with Chapin, and I expect Lexington to jump into the top 15 soon (4-0 Lexington).
Magnet Stratford is probably going to be a close game, with the small high ranked school facing the big nonranked school (1-0 Magnet).
Don't know much about JL Mann and Wren, but I'm guessing that the 3a school will take it (2-0 Mann)