Replay looks like, on the attempted steal, the throw beat Wilmes to the bag but the 3rd basemen didn't get the tag on him in time. Really hard to tell. Throw definitely beat Wilmes.
EDIT: Big early call goes in Iowa's favor. Dorighi needs to drive him in to grab an early lead.
EDIT 2: Northwestern color guy is a moron. On Dorighi's grounder up the middle - which was fielded behind second base - the color guy says that the NW second basemen should have tried to throw out Wilmes at home plate. JFC. Not only would Wilmes have been safe but he probably wouldn't have had to slide. Absolutely the right play by the second baseman.