Aaron White had 20 points and a career-high 15 rebounds as Iowa came from behind to beat Nebraska-Omaha 83-75 on Sunday.
Iowa (2-0) sunk 38 free throws to overcome 18 turnovers and a rough shooting night from the outside.
Devyn Marble added 15 points for the Hawkeyes.
C.J. Carter scored 22 points for Omaha (1-1).
The Mavericks led for most of the game before faltering down the stretch.
The teams were tied at 66-66 with 6 Ã?½ minutes left when Iowa used a 12-2 spurt to finally pull away.
Anthony Clemmons hit a rare 3-pointer to start the run - Iowa only shot 3 of 14 from behind the arc.
Omaha went nearly five minutes without a field goal during that stretch.
Iowa's offense relied on its ability to attack the rim and get to the foul line.
The Hawkeyes shot 38 of 42 free throws.
White and Marble combined to make 21 of 26.
White shot 259 from the foul line last season - 69 more than any teammate and the second most free throws in the Big Ten.
The hand-checking rule change fits right into White's game.
The Hawkeyes looked lethargic and clumsy in the first half against Omaha - two days after a sharp performance in an 82-39 win over UNC-Wilmington.
Iowa turned the ball over 12 times in the first half. Omaha routinely beat the Hawkeyes to loose balls and long rebounds.
The Mavericks had 15 second-chance points in the half to lead 43-36 at halftime.
The Hawkeyes bench had 35 points. Zach McCabe scored 12 points and Clemmons added 11.
Omaha's Devin Patterson scored 13 points and John Karhoff added 11.