By Matt Hladik The Las Vegas Raiders have their home opener today against the Arizona Cardinals. Owner Mark Davis will not be in attendance. Davis will instead be across the country in Uncasville, Conn. for Game 4 of the WNBA Finals. He also owns the Las Vegas Aces, who hold a 2-1 lead over the Connecticut Sun in the best-of-five series. A victory for the Aces would seal up the first-ever professional sports title in Las Vegas history. “I knew if it was a potentially [series] deciding game, I would be with the Aces,” Davis said, via the Las Vegas Review-Journal. Last week, Davis missed Game 1 …