Knicks lottery pick Kevin Knox dominated Las Vegas last month and now thinks Vegas is giving the Knicks short shrift.

While Knox sees the Knicks in the playoff hunt, Vegas’ Westgate Sports Book has put the Knicks with an over-under of 29 ½ wins.

“I saw that,” Knox told The Post at the NBA’s rookie photo shoot Sunday morning. “People are sleeping on us with the 29 wins. I think we definitely can win at least 35 and get in that playoff talk. That’s my personal opinion. Everyone has their own opinion. But the whole team, I’m pretty confident we’re really good this year, that we have a chance to make the playoffs.”

Knox turned 19 Saturday, so maybe that talk is a naïve rookie still enjoying the effects of a birthday celebration. Not so. The 6-9 former Kentucky forward said he didn’t do any celebrating on his birthday, saying he just chilled in his room, as he geared up for this four-day rookie orientation program in New York.

While he believes he’s at the top of the rookie class, Knox made it clear winning is more important in 2018-19 than honors. Knicks president Steve Mills and GM Scott Perry, perhaps hoping for another lottery pick in 2019, have been silent about the playoffs.

“I’m pretty confident I can be one of the top rookies,” Knox said at the photo event staged at the Knicks’ Tarrytown campus. “But one of my goals this year is just to win in New York. I’m not really worried about winning the rookie award. I just want to win as a team, take road games, play some of the top teams and beat them to make the playoffs. Ultimately I want to win. That’s my main focus as my rookie year.”

The overriding issue is when his forward partner, Kristaps Porzingis, will return from his ACL surgery. Once he does, the Knicks’ starting lineup could look formidable, with either Trey Burke or Frank Ntilikina manning point guard, Tim Hardaway Jr. at shooting guard, Knox at small forward, Porzingis at power forward and Enes Kanter at center.

Knox and Porzingis, who is spending the entire offseason in Europe, have kept in contact. They stand to be the two faces of the franchise, if Knox’s summer league is an indication. Knox makes his NBA debut Oct. 17, when the Knicks open against the Hawks at the Garden.

“I text him and FaceTime him a lot,” said Knox, who averaged 21.3 points during summer league. “We’re talking a lot. I haven’t seen him in person.”

Whether Porzingis will be back for the nationally televised Christmas Game against Milwaukee is a mystery.

“I’ll let him handle that, the training staff handle that,” Knox said. “I’m going to continue getting better as a person. But it would be great to be able to get him back the first game of the season and be able to play with him.”

They have the potential to be a tantalizing duo. Knox showed his alpha mentality in getting to the basket at will and drawing fouls.

“I could see us running a lot of pick and rolls together,” Knox said. “Me ballhandling, him setting the picks, him coming off it and making the reads. It’s definitely something I can see, and it can really work, too.”

After Vegas, Knox attended the ESPYs and the “Equalizer 2” premiere. He heard positive feedback from some famous new colleagues such as Paul George, Jayson Tatum, JaVale McGee and Dwight Howard.

“Pretty much everyone I talked to said I saw you play in summer league and enjoyed watching you play,” Knox said. “They said, ‘Keep working hard and keep balling.’”

NBA scouts raved about Knox, the second youngest player in the draft, saying he showed the skill and mindset to turn into a No. 1 option eventually.

“The spacing is so much different in the NBA,” Knox said. “… There’s more spacing, more 1-on-1. I got more space to do work — something I didn’t get to show at Kentucky. Maybe I’ll have a different role in the NBA than college. I’m glad I got to show my repertoire and do more and show more.”

One week ago, after some travels, Knox got back working with Knicks assistants in the Tarrytown gym. Coach David Fizdale returned from vacation Thursday to drill Knox.

“It was good to get back and work out,” Knox said. “They want me to be versatile, stay aggressive, do different actions, learning how to move without the basketball. They saw a lot in summer league, but we’ll be playing against better players now and I’m trying to get more consistent and better at getting to spots and making shots from there.”

Selected ninth amid chants for “Michael Porter,” Knox looked more like a top-three pick in Sin City, stirring up the Knicks’ fan base with his “20” jersey popping up all over sporting-goods stores in New York.

“I had a lot fun in Vegas,” Knox said. “I was glad to see all the love I got on social media from the fans. It was a great experience and I really enjoyed it.”