Tie breaker is Head to Head but with a 3 way tie GC, Peabody, and UC all ending the season at 5-1 in the region. The next tie breaker that would work in this situation is overall record which would put Peabody ahead at 9-1, GC next at 8-2, and UC at 6-4, then TCA at 4-6. Of course this is based on my predictions and assuming that the top 3 win out. If any lose a game then the 3way tie would be broken and it would go back to head to head.
Also IF TCA were to win out and beat both GC and Peabody they would tie with UC for top spot in the region. UC would have the head to head there.
Edit- Unless it is decided that once the top spot is filled then the next 2 teams go back to head to head that would put UC over GC. If peabody and UC wins out I don't see a scenario where Peabody isn't #1 in the region.