There are actually four decent matchups this year that could go either way.
The one game that I could see as a blowout is Class M. If Hillhouse shows up, Berlin will get run off the field. Hillhouse has too much speed for Berlin. Arkeel Newsome went nuts against Berlin in 2011. Hillhouse has two backs that could do the same and Hillhouse's defense is playing the best it has all season.
In Class LL, I'm leaning toward NFA. They seem to have everything clicking and have some much confidence right now. Xavier is playing as well as it has all year and they're healthy which could be bad for NFA. It will be interesting to see how NFA handles playing in their first championship game since 1945.
In Classs L, Windsor matches up very will with Hand. They're certainly bigger and may be more athletic. Hand always plays well in these big games. Windsor will have to play it's best game to win.
In Class S, I think North Branford presents a challenge to Ansonia. They're a very balanced team and their QB (Basil) is outstanding and very accurate. Ansonia loves to bring pressure and plays man all over the field. So, if NB can pick up the blitz there will be opportunities for big plays down the field. It's nearly impossible to run at Ansonia's front 7. Hyde tried and failed miserably. The problem for NB is Ansonia's speed and big play ability. Newsome is healthy. His ability to change direction and the burst are back. Hyde Leadership had speed, Newsome ran by them like they were standing still. Matos demands double coverage. McKnight can tuck it and take off. Finney is a huge mismatch for a LB. Ansonia is big, physical, and more athletic. If the running game gets going, Ansonia will keep the ball out of Basil's hands and roll. NB hasn't seen a team like Ansonia, and Ansonia hasn't seen at team like NB. It's the matchup everyone wanted in Class S. NB will score, Ansonia will score more often. Ansonia wins it's 18th State Title in 26 appearances, 27th straight game, and 745th career victory. All state records.