After weeks of close losses, the Nets got blown out Monday.

Trailing wire-to-wire, the Nets were on the receiving end of a 120-101 beatdown by the Mavericks before a crowd of 16,434 at Barclays Center.

The Nets never led, trailed by as many as 22 and had a string of 10 straight games decided by single digits snapped — eight of which had been defeats.

The Nets (23-49) stayed tied with Philadelphia for fifth in the lottery standings, after the 76ers sat Quentin Grimes for a fifth straight loss.

Brooklyn moved two games ahead of seventh-place Toronto.

The Nets were done in by a lack of ballhandling and an inability to guard their yard.

With D’Angelo Russell out, Brooklyn got outscored 31-14 in points off turnovers, and got beaten off the dribble to allow 56.3 percent shooting.

“We’ve got to guard [our] yard. It’s hard to defend blow-bys. So you’ve got to guard your yard,” said Nic Claxton, who had a team-high 19 points. “We got outrebounded. We just got outplayed. You’ve got to give credit to them. They just had a number. Even when we went zone, they got whatever they wanted. So they had our number.”

Cam Johnson had 17 points and a career-high eight assists, trying to compensate for Russell’s lost playmaking.

But he had six of the Nets’ 19 turnovers, costly live-ball giveaways that led to fast breaks.

Ex-Net Spencer Dinwiddie stood in for sidelined Kyrie Irving (torn ACL) with 16 points and 12 assists.

Anthony Davis, out since Feb. 8 with an adductor strain, added 12 points and six rebounds in his return.

The Nets stumbled right out of the gate, down 21-8 on a pull-up by Naji Marshall (22 points) seven minutes in.

The Nets allowed nine unanswered points later in the quarter, Brandon Williams’ jumper leaving them in a 32-15 hole.

His free throws pushed the deficit to 19 in the second.

Brooklyn mounted a 12-4 run, but they couldn’t cut off Dallas’ drives or protect the ball enough to ever get any traction.

They fell behind 94-72 on Williams’ basket with 42.1 seconds left in the third, and the rest was garbage time.

“Our offense didn’t help our defense,” said coach Jordi Fernández, citing the turnover margin and getting beat 17-8 on second-chance points. “Obviously they’re bigger. But we should have fought better.”

Let go by Memphis in a salary dump, Ziaire Williams is having a career year in Brooklyn.

The restricted free agent is stumping for an encore.

“I’ll be the first to say there’s no other place I’d rather be than to be here,” Williams said. “So hopefully the summer works out. But yeah, it’s a great spot for me. I’ve enjoyed my ride here so far.”

Williams came into the season a career 30.1 percent from deep.

But he was 2-for-5 on Monday against the Mavericks, and has a career-best 28 3s this month.

His previous bests had already been this year, 23 in February and 25 in January.

Dallas coach Jason Kidd — who played with Vince Carter from 2004-08 on the Nets — spoke about his ex-teammate having his jersey retired at Barclays Center.

“It’s really cool to see Vince, to see his number in the rafters. He means a lot to the Nets organization, the excitement,” Kidd said. “To see his name and number up there is really, really cool.”