Nzekwesi made 13 of 17 shots from the floor and Obanor was a crisp 7 of 8 -- a combined 20 of 25 -- as the Golden Eagles shot 62 percent (31 of 50) and outscored North Dakota 40-28 in the paint.
Oral Roberts (6-11, 2-0 Summit League) led by as many as 17 in the second half, but had to fend off three rallies in the final 20 minutes when North Dakota closed to within four points.
Cortez Seales scored eight points and, with a pair of free throws late in the second half, passed 1,000 career points for North Dakota.
Does well-traveled Eric Musselman have the right formula at Arkansas?
Eric Musselman has lived out a career as a basketball vagabond. Is Arkansas the place where he'll make his most lasting mark?
Coach K, Duke land blue-chip '20 guard Steward
D.J. Steward, a five-star shooting guard in the 2020 class, selected Duke over Texas and Louisville, giving Mike Krzyzewski his third five-star recruit in next year's group.
Spinal surgery gives UConn's Hurley new outlook
Less than two weeks after having surgery for a degenerative spinal condition that required replacing two disks in his neck with artificial ones, UConn coach Dan Hurley is back at work full-time.