LAS VEGAS — With their new superstar LeBron James looking on, the Los Angeles Lakers reached the semifinals of the NBA summer league Sunday with a 101-78 win over the Detroit Pistons in Las Vegas.

The Lakers leapt to a 33-14 lead after one quarter and never trailed.

Svi Mykhailiuk paced the Lakers with 19 points, pulling down four rebounds and doling out two assists.

Josh Hart added 18 points, four assists, two rebounds and two steals and Xavier Rathan-Mayes chipped in 11 points.

At the pre-season tournament that typically gives rookies and young playmakers a chance to hone their skills and make their case for roster spots in the regular season, James created a sensation when he arrived to watch the Lakers’ game clad in gold Lakers shorts and purple shoes.

He departed before the summer league lineup of his former team, the Cleveland Cavaliers, beat the Toronto Raptors 82-68 to set up a semifinal clash with the Lakers.

James signed his new four-year contract worth $154 million with the Lakers earlier this month, a move that Lakers President Earvin “Magic” Johnson called a “huge step” for the team.

James made it known on July 1, at the start of the free agency period, that he would depart the Cavaliers for a second time and join the Lakers, ending months of frenzied speculation about the NBA superstar’s next career move.

Brooklyn Nets deal Lin to Hawks: reports

Jeremy Lin, the Chinese-American NBA point guard who sparked “Lin-sanity” for the New York Knicks in 2012, has been traded from the Brooklyn Nets to the Atlanta Hawks, according to multiple reports.

The New York Times, Newsday and ESPN reported the deal was set to be completed with the Hawks sending Brooklyn a 2020 second-round NBA Draft pick and the rights to 21-year-old French guard Isaia Cordinier, who plays for Antibes in his homeland.

Lin, who turns 30 next month, was the first US player of Chinese or Taiwan heritage to play in the NBA when he joined the Golden State Warriors in 2010.

After being released in December 2011 by Golden State, Lin was claimed by the Knicks for a reserve role and pondered ending his NBA career if released.

But when the Knicks were hit by injuries, Lin was given a chance at major playing time and responded by sparking the Knicks to a seven-game win streak to level their record at 15-15.

The “Lin-sanity” spell saw last-second game-winning shots and 30-point efforts with stars Carmelo Anthony and Amare Stoudemire sidelined.

Lin became the first player in NBA history with at least 20 points and seven assists in each of his first five starts before undergoing left knee surgery in March to end his season.

Since then, Lin has played for the Houston Rockets, Los Angeles Lakers, Charlotte Hornets and with Brooklyn for the past two seasons, although he has played in only 37 games over two seasons for the Nets after signing a three-year deal worth $36 million in 2016. — Agencies