Holland, MI match-ups: Eastern-PA vs. Emory
UMass-Boston vs. Calvin
Cal Lutheran vs. Clarkson
UW-Stevens Point vs. Hope
Possible X-factor: IMHO, the team least expected to get this far (at least on paper) is UW-Stevens Point--the question is can they knock off their second consecutive ranked opponent on that opponent's home floor?
Team with most momentum: CLU-- the Regals' comeback against Hardin-Simmons got them rolling again--however, should they get past Clarkson, they would have to beat Hope to get to the final.
Toss-up: Eastern-PA vs. Emory (though Eastern PA knocked off home-standing Juniata in that regional--

"Extra man" factor-- how many of those in attendance are going to be gunning for a Hope/Calvin championship match?
(UMass-Boston is just about in the same boat as UW-Stevens Point in that regard).
One other stat of note: At my last check, 6 of these teams were in the Top 20 in the nation in terms of team hitting percentage.