LAS VEGAS — The Nets rescinded their qualifying offer to Theo Pinson over the weekend, briefly leaving him an unrestricted free agent. But they liked the second-year wing so much that they went ahead and signed him to a two-year deal Monday.

Pinson shook off the sore back that sidelined him Sunday, returning to the lineup a day later to throw his body around, do the dirty work and even shake off a nasty shot to the face.

After taking a key charge in the late going of the Nets’ 88-85 summer league win over the Wizards on Monday, he was fouled in the eye in the game’s waning seconds. But Pinson came back in to take his free throws to help ice the victory.

“Yeah, he banged his eye. We haven’t got an update yet, but I think he’ll be fine. There was so little time left in the game just to make sure we check it out. But we haven’t got the update yet, but I think he just got hit in the eye,” said assistant coach Adam Harrington.

Pinson finished with nine points, and with North Carolina coach Roy Williams seated courtside, the former Tar Heel had another glue-guy type of game that made him one of Williams’ favorite players.

“One of the greatest kids I’ve ever been around, the most gregarious players I’ve ever been around, the funniest kid I’ve ever been around. I just love him like a son,” Williams told The Post of Pinson, whom he coached to a 2017 NCAA title. “Any time anybody mentions Theo Pinson’s name to me, I smile. That’s a pretty good thing.”

Point guard Josh Gray had 19 points and eight rebounds — both team-highs — while second-round pick Nic Claxton added 12 points, seven boards and a block.

“I’m starting to feel a lot more comfortable out there,” said Claxton, who came off the bench but was inserted into the lineup at center to open the second half. “It’s our third game. Things are starting to slow down for me. In that second half especially, I got the start and I knew in the first half we were flat, so I just came out and did what I could to help us win.”

The Nets’ financial finessing allowed them to sign Claxton using cap room instead of a minimum deal. It let him ink a three-year, $4.2 million deal — fully guaranteed, according to ESPN — instead of only a one- or two-year pact. That’s key considering his long-term potential and the fact his spindly frame needs work.

The Nets announced Monday they signed former Knicks forward Wilson Chandler.

Jarrett Allen was a healthy scratch.

The 2020 first-round draft pick the Nets got from Golden State is protected for selections 1-20. If it falls in that range, they’ll get the Warriors 2025 second-rounder, according to Real GM.