KHLOE KARDASHIAN’s marriage to NBA star LAMAR ODOM is on the rocks be­cause he’s blaming her for causing problems with his new basketball family.

Lamar, 32, has been struggling on the court since he was traded from the Los Angeles Lakers to the Dallas Mavericks late last year. And making matters worse, sources say he and Khloe are fighting over her refusal to socialize with his teammates and their wives.

According to a close source, an angry Lamar snapped at Khloe: “You have your own agenda! Everyone believes you think you’re too good for them!”

The source went on to explain: “The Mavericks won the NBA champi­onship last year, and their biggest change this season was bringing in Lamar. He hasn’t played well and the whole team is floundering, so the last thing he needs is for Khloe to act like a diva.”

The 27-year-old reality show star reportedly got off on the wrong foot with the players’ wives and girl­friends. Several social events were planned to bring her into the fold, but she was always too busy shuttling back and forth between Dallas and L.A. to participate, the source said.

“She isn’t trying to become part of the group,” the source continued. “She’s basically been a no-show.”

Khloe even declined an invitation to get involved with The Jason Kidd Foundation, a charitable group run by Mavericks point guard Jason Kidd and his wife, Porschla. The foundation is dedicated to improving education among the youth.

“Khloe said the charity sounded great but that she doesn’t have the time to get involved, plus she works with her own fundraising groups,” said the source. “That didn’t help her to win any fans with the Mavericks ladies. And it’s just making life more difficult for Lamar.”

The couple married in 2009 after a month-long romance. Since then, Lamar has become a fixture on “Keeping Up with the Kardashians,” and the two got their own spinoff series, “Khloe & Lamar.”

But the move from Los Angeles to Dallas has thrown a monkey wrench into their lives and marriage.

“They’re fighting a lot,” revealed a family friend. “And their marriage is melting down because of it.”

And now Lamar's been demoted as well.