SALT LAKE CITY — Even though it was just a summer league game, Celtics rookie and No. 3 overall draft pick Jaylen Brown understood there was some added pressure going against No. 1 overall pick Ben Simmons. And early on, it showed, if only slightly.
“He was pressing just a little bit,’’ Celtics coach Micah Shrewsberry said. “He wants to play so well. He’s a guy that wants to please and do so well. This was a hyped-up matchup.’’
Later, though, Brown showed that athleticism and potential that the Celtics have raved about in recent weeks. His dazzling fourth-quarter propelled the Celtics to a 102-94 win over the Philadelphia 76ers in the opening game of the Utah Jazz summer league in Salt Lake City.
“Jaylen can do some things,’’ Shrewsberry said, “and he can fly a little bit.’’
Brown, who drove through the lane and drew fouls throughout the game, converted his first field goal when he drained a 3-pointer early in the fourth quarter. Later, he threw down a dunk on a long inbounds pass from James Young, and then attacked the rim and attempted two aggressive, athletic, one-handed dunks that made the crowd gasp.
He was fouled both times, stopping him from converting the dunks, but the message was sent.
“I could have got a layup but I was a little frustrated a bit earlier, so I decided to just take it out on somebody,’’ Brown said. “Next time, they might get out of the way.’’
Brown finished with 16 points and 6 rebounds. Terry Rozier had 18 points, 6 rebounds, and 5 assists.
“It felt like last year, even in summer league, I caught myself moving around too much, not thinking the game as much,’’ Rozier said. “That’s what I wanted to work on this summer.’’
R.J. Hunter added 17 points for Boston and first-round pick Guerschon Yabusele struggled a bit and finished with 5 points and 6 rebounds in 22 minutes. Simmons had 10 points, 8 rebounds, and 5 assists, but left the game in the fourth quarter with a leg cramp.
The Celtics were without second-year big man Jordan Mickey, who suffered a left shoulder injury recently. The injury is not believed to be serious, but Mickey, who is back in Boston receiving medical treatment, is not expected to join the team in Utah.
The Celtics are hopeful he will be able to return in time for the Las Vegas summer league.
The Celtics will face the Jazz on Tuesday night.
Mavs to land pairAndrew Bogut is headed to the Dallas Mavericks from Golden State thanks to the Warriors’ successful pursuit of Kevin Durant.
A person with knowledge of the deal said that the Mavericks have agreed to acquire Bogut with the Warriors trying to clear salary-cap space so they can add the four-time scoring champion Durant.
Other details of the trade are being worked out, the person told the Associated Press on condition of anonymity because the deal hasn’t been finalized and can’t be official until league business resumes Thursday.
The person also said the Mavericks are set to sign restricted free agent Harrison Barnes of Golden State.
After the Mavericks initially agreed with Barnes on an offer sheet for a maximum contract, the Durant agreement will allow Dallas to sign Barnes to a four-year, $94 million deal because the Warriors will renounce their rights to Barnes to clear enough cap room for Durant.
Bogut will get $11 million in the final year of his deal.
Focus on Westbrook
Russell Westbrook is no longer sharing the NBA marquee in Oklahoma City after the Thunder lost much of their identity when Durant chose to join the Warriors.
The Thunder’s focus now has to be primarily on one of the most electrifying players in the NBA who they still have on the roster — at least for now. Westbrook’s future is unclear. He is heading into the final year of his deal, and he could be traded before that.
‘‘Anything like that with Russell is hypothetical,’’ Thunder general manager Sam Presti said. ‘‘Everybody knows how we feel about Russell.’’
Westbrook won the 2015 scoring title and finished fourth in the MVP balloting last season, ahead of Durant, who finished fifth. Westbrook, the two-time reigning All-Star MVP, has consistently improved throughout his career, and he could take his game to another level without sharing the load with Durant, a four-time scoring champion and former league MVP.
‘‘Russell Westbrook is a force of nature,’’ Presti said. ‘‘He is a true leader in the sense that he takes it on. He takes it on, and I think he’ll take this on, as well. This is a different situation, and I know that Russell will adjust and adapt to that.’’
The Thunder have been making changes to their roster, and now more will undoubtedly come.
Gasol, Spurs OK deal
The Spurs agreed to a two-year deal with veteran forward Pau Gasol, a person with knowledge of the situation told the AP. The deal is worth more than $30 million and final terms will be completed after the Spurs make a move or two to create the necessary cap space, according to the person who spoke on condition of anonymity. Gasol spent the last two seasons in Chicago and averaged 16.5 points, 11.0 rebounds, and 4.1 assists this year, his game showing few signs of aging even as he prepares to turn 36 on Wednesday . . . A person with knowledge of the details said that Brandon Jennings has agreed to a deal with the New York Knicks. Jennings was limited to 48 games last season with Detroit and then Orlando after he was traded at midseason. He has averaged 15.5 points and 5.9 assists in 460 games. He comes to New York as the backup to Derrick Rose, whom the Knicks acquired from Chicago in a trade last month . . . Dwyane Wade has been extended a two-year, $40 million contract offer to stay with the Miami Heat, a person with knowledge of the negotiations told the AP. The second year would be at Wade’s option, said the person who spoke to the AP on condition of anonymity. The contract, if accepted, would essentially match the career-best $20 million salary Wade made this past season. Wade, who has spent all 13 of his NBA seasons in Miami, averaged 19.0 points and 4.6 assists this past season.
Material from the Associated Press was used in this report. Adam Himmelsbach can be reached at adam.himmelsbach @globe.com. Follow him on Twitter @adamhimmelsbach.
