'Venus and Serena' sings the sisters' praises and mentions their foibles

Say some super villain like Lex Luthor or Donald Trump has taken you prisoner and forced you to play a doubles match to save your life. The one person you'd pick to go into battle with would have to be one of the Williams sisters, Venus or Serena. True warriors of the court, they have dominated the game for a decade and a half and you'd bet your life on their competitive edge. And you'd need one of them, because chances are, the other has agreed to partner up with the villain. "Venus and Serena" is an intimate, mostly glowing portrait of these two closer-than-close tennis champions, siblings who have battled the best players the rest of the world has to offer, the tennis establishment ...