TULSA, Oklahoma (Ticker) -- Steve Alford's coaching move paid off.
Alford's late timeout led to a key missed free throw for No. 21 Tulsa as Iowa held on for a 67-63 upset.
With Iowa (8-2) holding a 64-62 lead, Tulsa's Antonio Reed was fouled with nine seconds left. Reed made the first attempt before Alford called a timeout.
Reed, who entered the contest just 1-of-4 at the line this season, misfired on his second attempt and Iowa center Jared Reiner rebounded. Reiner was fouled and split a pair at the line with seven seconds to go.
That gave Tulsa (7-2) one final chance, but Jason Parker missed a rushed 3-pointer with four seconds left. Reiner made two foul shots to seal the win.
"I thought obviously this was a tremendous win for us," Alford said. "I think we held them to one point the last four minutes of the game on their own floor. That is something we really work on."
Chauncey Leslie scored a career-high 21 points and gave the Hawkeyes their first lead, 63-62, with a reverse layup with 52 seconds left. He had 12 points in the second half before fouling out and notched his fifth 20-point effort of the season.
Johnson led Tulsa with a season-high 23 points and Parker added 14 on 5-of-14 shooting. But the Golden Hurricane were limited to nine baskets in the second half and suffered a second straight home loss.
"It's disappointing," Johnson said. "We know we had a chance. We had it right there in front of us, we had a few costly plays in a row and we just didn't knock them out."
Johnson's three-point play gave Tulsa a 62-57 lead with 2:23 remaining. Leslie responded with two foul shots, Jeff Horner scored inside and Leslie converted the go-ahead layup.
The Golden Hurricane established control early and took a 40-29 lead on a 3-pointer by Jarius Glenn with more than 16 minutes remaining. Leslie had a pair of hoops to spark a 10-2 run by Iowa that cut the deficit to three.
"In the second half, we really put together 20 minutes of high execution, both offensively and defensively," Alford said. "We didn't shoot well today but did a good job of getting good shots, and our guards did a nice job handling the ball."
Tulsa was just 6-of-21 from beyond the arc, including a 2-of-9 outing by Parker. Parker nailed a school-record eight 3-pointers earlier this season.
Parker and Glenn both committed five of the Golden Hurricane's 18 turnovers.
"It's probably not a coincidence that in our two losses we've combined for turnovers," Tulsa coach John Phillips said. "They didn't shoot a great percentage, but when you give them second and third opportunities, that's going to hurt you."
Tulsa played without third-leading scorer Dante Swanson, who broke his foot in Monday's victory over Texas Christian. Swanson is averaging 14.3 points per game.