Mark Cuban has expanded his impressive sports portfolio.Harbinger Sports Partners, in which Cuban is a general partner and president, has bought a minority stake in the MLB‘s Athletics, according to various reports.Cuban, and Harbinger Sports Partners have purchased a stake in the MLB’s AthleticsGettyThe franchise are currently in the midst of relocating to Las Vegas and building a $2bn domed stadium in Nevada, a significant factor in the group’s purchase, according to sources.Mark Cuban buys stake in Athletics amid Vegas relocation“Our conviction is simple,” the group’s chief investment officer Rashaun Williams said in a statement.“The next decade of sports ownership will look very different than the last. “We believe Las Vegas will sit at the center of that transformation, and Harbinger intends to be one of the firms helping shape its future.”This is Harbinger’s first investment since their formation in 2025.The group is made up of Co-founder and CEO Steve Cannon who is vice chairman of AMB Sports and Entertainment, which oversees the Mercedes-Benz Stadium of the NFL’s Atlanta Falcons.Managing partner Jonathan Mariner is the former chief financial officer for Major League Baseball.“We are very pleased to welcome Harbinger Sports Partners as an investor in the Athletics,” the team said in a statement. “The experience of their principals across sports, media, and entertainment, combined with their long-term perspective, makes them a valuable addition to our ownership group as we work to build the future of the franchise in Las Vegas.”Buying into baseball has been a previous challenge for Cuban, who has an estimated net worth of $6 billion.Cuban has attempted on multiple occasions to buy into baseballGettyAthletics Owner John Fisher is excited to welcome Cuban and his groupGettyCuban tried to buy the Pittsburgh Pirates in 2005, the Chicago Cubs in 2008, the Texas Rangers in 2010 and the reigning World Series champion Los Angeles Dodgers in 2012.In the sports world, Cuban is most known running the NBA‘s Dallas Mavericks for 23 years.He sold the majority of the Mavs to the Adelson Family in 2023, and was stunned when they made the decision to trade Luka Doncic to the Los Angeles Lakers last year.The Athletics are currently playing the second of three planned seasons in Sacramento, who themselves are eyeing an expansion. Despite construction on their new stadium being ahead of schedule, the As will honor their commitment to Sacramento, moving in for the 2028 season.“As someone who helped lead the development of Mercedes-Benz Stadium, I was incredibly impressed with the Athletics’ vision,” Cannon said in a statement. Construction on the Athletics’ new stadium is ahead of schedule, but the team will only move in for the 2028 seasonGetty“The new ballpark will be more than a baseball stadium. It will become a year-round entertainment venue and another landmark destination on the Las Vegas Strip.”Away from their move to Las Vegas, the Athletics are one of the most exciting franchises in the sport.The A’s have systematically assembled one of baseball’s best young cores, anchoring their offense with Lawrence Butler, Shea Langeliers, and Tyler Soderstrom, alongside top draft hits in Jacob Wilson and Nick Kurtz.Not to mention the MLB’s No.2 prospect, Leo De Vries, waiting in the wings.The future certainly looks bright in Sin City.Stay up to date with the MLB across all our talkSPORT platforms – subscribe to our YouTube channel for the latest news, opinion, exclusive interviews and our daily unfiltered, unscripted show ‘The S* Word, from 8am ET