LAS VEGAS — Winning rosters aren’t random, they’re built.

Or in the case of the Nets, rebuilt.

The Nets of the past few seasons were constructed to accentuate their superstars, Kevin Durant and Kyrie Irving.

But after both were dealt at trade deadline this past season, the roster was deconstructed.

And the Nets’ moves this offseason — and head coach Jacque Vaughn’s comments — show they are being reconstructed in an entirely different way.

“Overall I think you see a shift in our team mentality,” Vaughn said Friday night at the Nets’ NBA Summer League opener. “No Patty [Mills], no Seth [Curry], no Joe [Harris], no Yuta [Watanabe]. So overall, the shift a little bit that we talked about at the end of the year, I think you’re starting to see that as an organization.”

What anybody watching can see is a shift away from one-dimensional shooters surrounding stars (of that departed quartet, Mills, Curry and Harris were all at least 31 years old and subpar defenders) and more of a mix of athleticism, defense and youth.

Not to mention roster flexibility for the future.

“Yes, [it’s] a combination,” Vaughn said of a shift in timetable from 30-something stars to a core of players between 24 and 27 years old growing together. “I think we still [have] our best versatility and the people that we can throw on the floor.

“We’ve got two 18-year-olds that are part of our program now, and another second-round pick in Jalen Wilson who has experience and won at a high level, so I’m looking forward to see what he can do. But I think overall, we addressed growing together and being able to be good right now and maximize who we have on the roster right now, but also looking forward to the future.”

Those 18-year-olds Vaughn mentioned are the Nets’ first-round picks from the draft last month, Noah Clowney and Dariq Whitehead.

The two youngest draftees in franchise history, they both may require time to benefit from the new development bent in the coaching staff to contribute. The rotation as it is, however, has gotten far younger in the post-Durant era.

The newly re-signed Cam Johnson is 27, Mikal Bridges is 26 and Nic Claxton just 24.

Vaughn included the rehabbing Ben Simmons, 26, in that core.

“Those four you mentioned — also Spencer Dinwiddie; he’s the elder statesman now at 30 and a 20-point scorer in the league — but Cam Johnson, Mikal Bridges, Ben Simmons, Nic Claxton, those are the 24-to-27-year-old range for us who are going to be able to grow together, define the culture,” Vaughn told NBA TV. “It’s a relentless culture is what we want: To be relentless teammates, be relentless competitors. So they’ll get a chance to define the culture going forward.”

The Nets love their buzzwords, and “relentless culture” could stick. If they win, it won’t even be used ironically.

According to Elias Sports Bureau, the Nets went into last season as the NBA’s sixth-oldest team, and ended it the 10th-oldest. They got younger after parting ways with Mills (34), Curry (32) and Harris (31), and are now middle-of-the-pack in age.

Dinwiddie, Royce O’Neale and Dorian Finney-Smith are their three oldest players now, all having turned 30 in the past few months.

O’Neale and Finney-Smith have been mentioned in trade rumors. The Nets’ recent free-agent signees, Lonnie Walker IV (24) and Dennis Smith Jr. (25), are younger and defense-minded.

“You have the group embrace where we are right now and embrace how you can grow together,” Vaughn told NBA TV. “Don’t look two steps beyond, what could happen, what might happen two years from now. I think you embrace where we are as a team, really dive into that and I think that’s where the growth happens.”