SAN FRANCISCO — As part of the first seven-team trade in NBA history, the Warriors added a third rookie from the 2025 NBA draft to their roster.

Jahmai Mashack, the last pick in last month’s draft, is now a Golden State Warrior.

In a swap that also included the Los Angeles Lakers, Houston Rockets, Atlanta Hawks, Brooklyn Nets, Minnesota Timberwolves and Phoenix Suns, big names such as Kevin Durant and Jalen Green will switch teams.

The Warriors made the trade official on Sunday afternoon.

As part of the 13-player trade, the Warriors will also bring in Australian rookie Alex Toohey as expected once the draft-day deal that brought the No. 52 overall pick from Phoenix to the Bay Area is finalized.

However, Rockets selection Mashack, the last pick in the draft, has also been included.

Who is Mashack, and what does he bring to the Warriors?

He is an athletic perimeter defender who some evaluators felt was the top on-ball defender in college basketball last season.

Mashack joins a wing rotation that includes Brandin Podziemski, Moses Moody, Buddy Hield, Gui Santos, No. 56 overall pick Will Richard and possibly Gary Payton II.

Mashack is a 6-foot-4, 192-pound shooting guard/small forward and a California native who went to Rancho Cucamonga’s Etiwanda High before landing at the University of Tennessee-Knoxville.

While at Tennessee, Mashack averaged 6.0 points, 4.2 rebounds, 1.5 assists, 1.7 steals per game.

In Knoxville, he became arguably the best stopper in the country, being named to the SEC all-Defense team while winning the Field of 68 National Defensive Player of the Year award. Mashack helped Tennessee reach the Elite 8 in each of his past two seasons.

Richard makes debut

With the Warriors’ acquisition of their three second-round picks — Australia’s Toohey, Florida’s Will Richard and Mashack — becoming official, Richard saw his first summer league action.

Richard, the No. 56 overall pick from Florida, looked comfortable at the shooting guard position during the Warriors’ 90-88 loss to the Spurs at Chase Center — even if his buzzer-beating 3-point attempt bounced off the rim.

Despite not being able to practice with the team before the trade became official, he started strongly. Richard began the game by making a layup in transition, and late in the fourth quarter he made a catch-and-shoot triple to cut the Spurs’ lead to 89-88 with 20 seconds left.

Richard scored 16 points on 3 of 10 shooting. He also displayed an ability to get to the line and make his shots — Richard went 8-for-8 on his free throws.

“That was my first time playing fives since the (national) championship game,” Richard said. “It felt good to get back out there with the guys.”

His fellow rookies Toohey and Taran Armstrong, flanked by second-year pro Quinten Post and longtime assistant coach Ron Adams, watched and cheered from the stands. Coach Lainn Wilson said he did not know if Toohey would play in the next game on Tuesday.

SJSU’s Moore, Uduje, Diallo face Warriors

The best San Jose State Spartan in recent memory suited up against the hometown team. Omari Moore, the 2023 Mountain West Conference co-Player of the Year, started for the Spurs and threw down a thunderous dunk in the first quarter.

In the second quarter, he threw a slick dime to Osayi Osifo for an easy layup in transition. Moore played the role of a do-it-all guard in a manner reminiscent of his days at SJSU, scoring 13 and throwing four assists.

Moore spent the previous season playing for Darüssafaka Lassa in the Turkish League.

Jose Udeje, his fellow Spartan, played four minutes and had two assists, after he scored seven points in just over five minutes on Saturday. Big man Ibrahima Diallo grabbed two rebounds for San Antonio.

Unheralded Warriors make impact

LJ Cryer made a name for himself in March as the top guard on championship runner-up Houston, and he displayed his accurate shooting stroke by making 5 of 7 triples and scoring 19 points. On one of his most spectacular makes, Cryer’s crossover left his defender splayed out on the Chase Center court.

“I’m just getting in the flow of the offense, and my teammates are doing a great job of creating advantages,” Cryer said at halftime.

His former Houston teammate Ja’Vier Francis put up 10 tough points on a variety of finishes.

Isaiah Mobley had another strong game after scoring 13 points on Saturday. The older brother of NBA Defensive Player of the Year Evan of Cleveland, the elder Mobley utilized an advanced faceup and off-the-dribble game to get to his spots and score 16 points.