SALT LAKE CITY -- Kevin Durant had not been called for a flagrant foul in his six-year professional career.
His body-check on Alec Burks sent the second-year pro flying out of bounds with 6:06 remaining.
Utah stopped a two-game losing run and ended the Thunder's four-game winning streak.
"You didn't watch the game? They outrebounded us. They scored in the paint. We turned the ball over. We just gave them the game. They executed on everything they did," Durant said.
"We just got to be better. We made some bone-headed plays. I know I did. We just have to be better."
While a team without a single All-Star showed it can compete with the best, Oklahoma City finds itself regrouping for a big game Thursday.
The Thunder head home for an NBA Finals rematch with Miami, which has beaten them five straight times going back to June's title series.
The Thunder will try to find the form that had them leading the league in scoring (106.4 points per game) and free throw shooting (.829), and that had routed their previous four opponents by an average of 25.3 points.
Instead of sitting his starters because they were ahead by so much, coach Scott Brooks pulled them Tuesday with about 5½ minutes remaining because it was a blowout the other way.
Durant blamed himself, even though he scored a team-high 33 points on 11-of-16 shooting, with 6 rebounds, 5 assists and 4 steals. He also had 4 turnovers.
"I turned the ball over too much," he said. "I didn't help rebound enough. I lead our team. I got to ignite the guys. I got to do better having guys follow me. I got to do better as communicating on the floor as well.
"We have to be better in every aspect. Energy. Effort. Rebounding. Passing. Not turning [over] the ball. We just have to be better. I think we will. We got a team that does a great job of bouncing back and learning from our mistakes."
The Jazz showed they can do that after dropping back-to-back games against Chicago and Sacramento.
Before the game, Millsap said the Jazz were desperate for a win.
"It's a statement win," said DeMarre Carroll, who had 13 points, 4 rebounds and 3 steals off the bench for Utah and keyed a big second quarter.
Utah's bench outscored Oklahoma City's 49-25, and the Jazz bigs dominated the boards, holding a 16-7 edge on offensive rebounds and 38-26 advantage overall.
The Thunder also committed 20 turnovers.
The game was scrappy from the start.
Jefferson poked the ball away for a steal in the first quarter and ended up getting poked in the eye so hard it left him sprawled on the floor for about a minute.
Kendrick Perkins was called for a flagrant foul and technical foul, and Carroll and Durant drew double technicals after getting into a little shoving match following Durant's flagrant on Burks.
"It was part of the game," Durant said of his play against Burks. "I'm not a dirty player or anything like that. It was just part of the game. I'm sure they would have done the same thing to me."
He has 10 technicals on the season.
The Jazz led by seven points entering the fourth but quickly put the game away, opening on a 6-0 run, with two more baskets from Jefferson.
The Thunder were already down 17 when Durant bumped Burks hard.
Burks, who had a career night in Saturday's loss, was undeterred going against Durant.
"We all know he's a great player but you can't be scared of anybody," said Burks, who added 13 points, 5 rebounds and 2 assists.
In the first meeting, Oklahoma City dominated, winning by 12.
A fifth straight win by 20 or more Tuesday would have broken a franchise record.
Instead the Thunder suffered their first loss since Feb. 2 at Cleveland.
While Utah's big men made a big difference, Jefferson outscoring Perkins 23-4 and Millsap outscoring Serge Ibaka 18-10, Utah got the boost from its bench it needed.
A steal by Tinsley then set up Millsap at the other end, giving Utah an 80-67 lead with 2:57 left in the third.
"Nights like this happen," said Westbrook, who added 22 points but had seven turnovers. "You aren't going to play perfect most of the year. Nights like this happen. You just got to get ready for next game."
Oklahoma City shot nearly 56 percent, while the Jazz were at 48.3 percent. But Utah took 19 more shots thanks to the big edge in rebounding.
The win gave the Jazz 20 victories at home this season. They head to Minnesota before the All-Star break, and should get two of their top playmakers back shortly thereafter in point guard Mo Williams and third-leading scorer Gordon Hayward.
"I think that was the biggest game of the year for us, especially coming off two losses," Watson said. "They are a great team, but we didn't give them too much respect. We respect them as opponents, but we went out to win the game."
Hayward will rest his sprained right shoulder through the All-Star break after getting through only three-fourths of practice Monday before feeling pain passing across his body. Jazz PG Williams headed to New York on Tuesday night and was scheduled to have two pins removed from his surgically repaired right thumb Wednesday. If all goes well, Corbin said it's just a matter of Williams getting mobility back in his hand. He will be fitted with a support brace. There was no timetable for his return, but he will have missed 26 games because of the injury (30 overall) through the break. Thunder G Kevin Martin was back in action after sitting out Sunday's game with flu-like symptoms. Thunder G Jeremy Lamb remained inactive with a lower-back strain. Tuesday was the Thunder's first loss this season when shooting more than 50 percent.
Jemele Hill and Michael Smith dissect LeBron's not-too-subtle postgame comments on his performance. Are these passive-aggressive comments unfit for a King?
Stephen A. Smith reacts to Thunder forward Kevin Durant's comments saying that Warriors guard Stephen Curry makes a lot of bad shots.
Take a look back at Toronto's thrilling Game 4 victory, fending off Cleveland's second-half rally.