Kanye West has sparked rumors he is feuding with Jay Z after he dropped the rapper's name from lyrics in his songs during a recent concert.

The Stronger hitmaker invited Jay Z and wife Beyonce to his wedding in Italy last month (May14), but the superstar couple opted to spend the weekend in the Hamptons, New York with their daughter, Blue Ivy, instead.

Now rumors are circulating the two may be feuding after West dropped Jay Z's name from several song lyrics during his performance at the X Games in Austin, Texas this past weekend (07-08Jun14).

According to reports, West omitted the 99 Problems hitmaker from his track Cold, which normally reads, "Lucky I ain't had Jay drop him from the team," and references his new bride's ex-husband Kris Humphries.

He then switched up the lyrics on Blood on the Leaves, in which he usually raps, "I don't give a damn if you used to talk to Jay Z/He ain't with you, he with Beyonce, you need to stop actin' lazy," to just, "You need to stop actin' crazy". And he also reportedly left out his moniker on Touch the Sky.

Following the concert, a fan commented about the omissions, writing, "First time he (skipped Jay Z's name), I (thought), 'Ehh that's odd, maybe he's just letting the crowd finish it whatever.' Then (Kanye) skipped his name again... Definitely obvious and intentional."

Meanwhile, Kanye's new mother-in-law, Kris Jenner, has spoken out about Beyonce and Jay Z's absence from the wedding, saying, "There was so much commotion and excitement, I never really gave that a second thought.

"If you had been there, you would have thought that was the last thing on anyone's mind. (I) just assumed they were working."