2nd place tie and #2 seed is actually still in play. Quite unlikely, but possible:
Dayton finishes with 13 or 14 wins (they have 13 after tonight), gets #1 seed.
URI loses last game, finishes 12-6
Richmond wins last 2, finishes 12-6
Davidson loses last 2, finishes 12-6
vcu beats DC, loses to GMU, finishes 12-6
UR and vcu are both 3-2 against the group, Davidson is 2-3 so they get the #4 seed, URI is 1-2 so they get the #5 seed.
UR beat vcu 2-0 H2H, UR gets the #2 seed.
As said, very, very unlikely. Davidson would have to lose to Duquesne on the road to end the year, URI would have to lose at home to Saint Joe's on senior night, and vcu would have to lose at home to GMU on senior night. As well as UR winning at UMass, vcu winning at DC, etc.