By WFAN.com and Associated PressThe group of men who attacked NBA star Kristaps Porzingis outside a Latvian nightclub over the weekend were upset he was no longer a Knick, according to a report.A source told TMZ Sports on Sunday that a handful of Russians confronted Porzingis because they were upset he switched teams. The Knicks traded Porzingis, who was reportedly frustrated with the direction of the franchise, to the Dallas Mavericks in January. The melee happened Sunday in Porzingis’ hometown of Leipaja. Video shows the 7-foot-3 forward with a bloody forehead. Video of the aftermath of the incident obtained by TMZ showed an agitated Porzingis in a torn shirt, pushing someone out of the way and approaching a group of men before several people stopped him and urged him to calm down.Kristaps Porzingis apparently got jumped in his hometown(weekend.vibe_) pic.twitter.com/TMcx31z7O8— NBA Central (@TheNBACentral) May 12, 2019 One of Porzingis’ friends temporarily lost his pulse in the brawl, according to the Latvian publication Latvijas Avize. He was revived by a “passerby.”In addition to a cut near his eye, Porzingis “may have broken his hand,” the report said.Related: Porzingis, 23, missed the 2018-19 season after tearing a ligament in his left knee in what turned out to be his final game for the Knicks in February 2018.Porzingis will become a restricted free agent July 1, and the Mavericks have said they intend to sign him to a long-term contract.The Mavericks said in a statement Sunday: “It is our understanding that Kristaps was jumped and assaulted outside of a club,” without providing further details.” The team is reportedly investigating the incident.It’s the second time since he was traded that Porzingis has made headlines away from the court. In March, his attorney acknowledged that a woman has accused the NBA star of rape. Porzingis claims the allegation is part of an extortion plot.