A Major League Baseball team is up for sale and while billionaire Warren Buffett likely isn’t buying the team, he could benefit thanks to a small stakein another team. What Happened: The sale of Major League Baseball (MLB) teams has been rare in recent years, which means a new sale could reset the valuation metrics of teams, an item that shareholders of Atlanta Braves Holdings (NASDAQ:BATRA)(NASDAQ:BATRK) will be watching. The Pohlad Family, which has owned the Minnesota Twins since 1984, announced Thursday that the team is up for sale. Carl Pohlad, who passed away in 2009, bought the Twins fo…