If the softball tournament is any indication, they are going back to the 4 team format this year.

The championships page also have the tournament as a Thursday-Sunday at the #1 seed.

OAC changed the tournament format this year...

Day 1:
#6 at #3 (single game)
#5 at #4 (single game)

Day 2:
Lowest remaining seed at #1 (single game)
Highest remaining seed at #2 (single game)

Day 3:
Remaining teams at higher seed (DH)

Day 4 (if necessary):
Remaining teams at higher seed (winner take all game)