Dallas Mavericks NBA jerseys, t-shirts and apparel in the UK. The Dallas Mavericks are one of the most valuable franchises in the NBA, under billionaire owner Mark Cuban. The Mavs were founded in 1980, and won an NBA Championship in 2011, beating the Miami Heat 4 games to 2 in the finals series under the leadership of Dirk Nowitzki. The Dallas brand and identity has always been been well embedded in Texan cowboy culture. Their original logo featured the classic cowboy Stetson hat, before moving to the stallion logo in 2001.