Sophie Hart scored a career-high 18 points, and Mallory Heyer made five 3-pointers and scored 17 for Minnesota.
Minnesota cut its deficit to six early in the fourth quarter, but the Trojans then put them away Thursday night.
Watkins shoots 0 for 10 in the first half, but Iriafen (23 points) and others step up in a full look at the array of the Trojans’ offensive options in an 82-69 win.