IOWA CITY, Iowa (AP) -- Iowa couldn't hit from outside. But the Hawkeyes couldn't be stopped from inside or the foul line.
Aaron White tied a season-high with 21 points and Iowa used a big run at the end of the first half to beat South Dakota 87-63 on Tuesday night.
Devyn Marble added 14 points and eight rebounds for the Hawkeyes (7-2), who controlled the interior with 54 points in the paint and a 50-31 rebounding margin. Iowa's 20 offensive rebounds led to 24 second-chance points.
"We tried to exploit their size," White said. "We did a nice job slashing the middle against that matchup zone."
Trevor Gruis scored 16 points to lead South Dakota (4-5).
Iowa pulled away from the pesky Coyotes with a 15-0 run at the end of the first half.
Five different Hawkeyes scored during the nearly four-minute stretch -- highlighted by Anthony Clemmons' steal in the backcourt and dish to Marble for an open dunk. Iowa only had a one-point lead before the run.
South Dakota stayed close with Iowa for the first 15 minutes with hot outside shooting. Jordan Boots' trey with 10:43 left in the first half gave South Dakota its first tie at 22-22.
The Coyotes later led 25-24 after a free throw, but that lasted only 29 seconds. The Hawkeyes recaptured the lead and surged ahead with their big run a few minutes later.
South Dakota made nine 3-pointers, including 5 of 8 to start the game. Iowa adjusted its defense and held the Coyotes to only three 3-pointers in the second half.
"Early on our press was bad. Just bad," Iowa coach Fran McCaffery said. "They got open 3-pointers right off the bat off of our press. That was disappointing."
Iowa struggled shooting from outside. The Hawkeyes missed their first 11 3-point attempts and finished 2 of 16. Iowa had made 33 percent of their 3-point shots through the first eight games.
The Hawkeyes did make 17 of 19 free throws on Tuesday.
Iowa owned the interior against undersized South Dakota. Six different Hawkeyes grabbed at least six rebounds. Backup center Gabe Olaseni had nine points and eight rebounds in just 11 minutes.
"Physically, we just got beat up a little bit," South Dakota coach Dave Boots said. "We just have no answer for it. We got pounded on the boards again tonight against a stronger and bigger team."
South Dakota's Casey Kasperbauer scored 14 points on 4 of 8 3-pointers. Kasperbauer is from Carroll, Iowa -- about three hours west of Carver-Hawkeye Arena.
Iowa started three freshmen for the second straight game. Mike Gesell scored 12 points and Adam Woodbury chipped in 10 points. Anthony Clemmons had eight assists and no turnovers.