Sergio De Larrea arrived in Dallas in late June after the Mavericks traded up in the first round of the NBA Draft to acquire his rights. The 20-year-old Spaniard spent five seasons with Valencia Basket before deciding to make the jump to the NBA, and his first weeks in the United States have already generated considerable buzz among Mavericks fans.

In the Las Vegas Summer League, De Larrea appeared in four games and quickly demonstrated why the Mavericks value his passing ability. He handed out a dozen assists in a game against Memphis and, three nights later, delivered a 14-assist performance versus Oklahoma City, a total that ties for the third-most assists ever recorded in a Summer League contest. Those numbers highlight a rare instinct for finding teammates and creating scoring opportunities.

Mavericks summer-league coach Joe Boylan praised the rookie’s “great understanding of who he is,” noting his creative lob passes, behind-the-back feeds, and willingness to thread the ball through tight windows. Boylan emphasized that De Larrea’s experience at the professional level in Spain should translate into a sophisticated grasp of the game, especially in the pick-and-roll where he shows a high-IQ approach similar to that of Luka Dončić.

The lob-pass tendency was evident on Thursday when De Larrea connected three times with the towering Kaodirichi Akobundu-Ehiogi on alley-oops and twice with wing player Tobi Lawal on lob-and-finish conversions. Those highlights demonstrate his ability to read defenses and deliver high-impact passes that can change the momentum of a game.

Physically, De Larrea is still filling out. Listed at 202 pounds, he will need to add strength and refine his ball-handling to navigate the NBA’s elite perimeter defenders, such as San Antonio’s Stephon Castle and Oklahoma City’s Cason Wallace. The transition from European professional play to the NBA’s pace and physicality will be a decisive factor in his early career trajectory.

Training camp will be the first true test. If De Larrea can demonstrate durability, defensive competence, and the ability to protect the ball against high-caliber opponents, he could earn minutes as a backup point guard or swingman once the regular season begins. Conversely, any struggles with the league’s speed and strength may see him spend additional time developing in the G League. Either way, his Summer League showcase offers a glimpse of a playmaker capable of accelerating Dallas’ offensive evolution.