Dallas Mavericks owner Mark Cuban insisted trade rumours claiming the NBA franchise are shopping star Kristaps Porzingis are "not accurate".

The trade deadline is March 25 and speculation over Porzingis has intensified amid reports the Mavericks have gauged the Golden State Warriors' interest.

Dallas acquired Porzingis in a trade with the New York Knicks in 2019, pairing him with Luka Doncic but the Latvian big man has struggled for form and fitness.

Cuban, however, denied the reports regarding 2018 All-Star Porzingis – who was the fourth pick in the 2015 NBA Draft.

"It's not accurate," Cuban told The Dallas Morning News. "We have not discussed him in a trade at all. Has not happened."

Prior to Tuesday's clash with the Boston Celtics, Mavericks head coach Rick Carlisle added: "I know Mark's denied it. I'm denying it."

Porzingis is averaging 20.5 points, 8.2 rebounds and 1.3 assists per game for the Mavericks (14-15) this season.

The 25-year-old returned from a knee injury in January, which he sustained in October.

"He's had to play his way into shape, and it just hasn't quite been the same," said Carlisle.

"It's not an excuse thing in my mind. These are just the true facts of what's happened."

Rick Carlisle praised Luka Doncic and Kristaps Porzingis' "tremendous" chemistry after the Dallas Mavericks won a fourth straight game.

Doncic (46 points, 12 assists and eight rebounds) and Porzingis (36 points and seven rebounds) led the Mavericks past the New Orleans Pelicans 143-130 on Friday.

It marked the first time in NBA history a pair of foreign-born team-mates each had 35-plus points in a game, as per Stats Perform.

Carlisle hailed the pair after the Mavericks improved to 13-14 to sit 11th in the Western Conference.

"They're both great offensive players, they're both very unique, they fit together extremely well, their games complement one another extremely well," the Mavericks head coach told a news conference.

"The chemistry was tremendous. Balls were being delivered on time, on target, people stepping into shots in rhythm. It was great stuff to watch."

Despite their win, the Mavericks gave up 130 points to Zion Williamson (36) and the Pelicans.

While Carlisle knows what his offense is capable of, he is eager to see the defense improve.

"This is why I keep talking about defense and I know some of our guys are talking about defense. This kind of shot-making is great, is it always sustainable? Of course not. Not every team can keep up this kind of pace, but we'll certainly try.

"This is the reason you've got to have a defense that'll hold up on nights maybe when you don't have it going quite like this. With the way we can space the floor, the way we can penetrate the ball, the way we can shoot the ball, all those kinds of things, we're going to create our share of problems for teams with our offense.

"We've just got to keep working on the basics – transition, protecting the rim, closing out, contesting and rebounding, those are the main things."

Dallas Mavericks duo Luka Doncic and Rick Carlisle were delighted to see Kristaps Porzingis back in action after the Latvian made his first appearance of the NBA season on Wednesday. 

Having undergone knee surgery in October, Porzingis had missed Dallas' first nine games as he continued his recovery.

A potential return on Monday was then scuppered when the clash with the New Orleans Pelicans was postponed in accordance with the league's health and safety protocols amid the ongoing coronavirus pandemic. 

However, the former first-round pick by the New York Knicks was finally able to take the court again against the Charlotte Hornets, contributing 16 points during his 21 minutes in a 104-93 triumph. 

"He' an amazing player," Doncic - who led the way with 34 points - said, according to Dallas' official website. 

"He's got to get back into rhythm, and I think for the first game he played amazing. He's going to keep improving and we're going to need him a lot."

Mavs coach Carlisle admitted Porzingis' return – admittedly on a restriction in terms of minutes – makes a huge difference to the team, including helping to alleviate some of the pressure on the shoulders of Doncic. 

"When both of those guys are out there, it's a game-changer for us because you've got two guys that can both play on the inside and really space the floor on the outside," Carlisle said.  

"They can both put the ball on the floor and make plays. 

"You get two franchise players, it's important to have them on the floor together and available to play. You look at every team in this league, if they're without one of their cornerstone guys it's going to be a lot tougher job. 

"I think everybody feels a lot better now that KP is back in the mix."

The game was also notable for Carlisle in terms of a personal milestone, as he reached 800 victories in his coaching career.

Porzingis himself accepted he had been a little too eager to make an impact during his comeback, knowing his involvement in the game was always going to be limited. 

"What I think didn’t help me was knowing that I had the minutes restrictions," Porzingis said. "I was trying to do as much as I could in those minutes that I had. 

"Sometimes you don't make the best decisions when you really want to be aggressive, but it's okay. I wanted to be aggressive for the time I was going to be out there, and most importantly [it was the] first game and first win for me."