Egor Dëmin entered Tuesday having played a total of a dozen NBA games in his career. And on a Nets team that is lacking in veteran stars, the 19-year-old rookie from BYU, who grew up in Moscow and played with Real Madrid prior to college and the NBA, is looking for guidance wherever he can find it. That includes a pair of legends, in two sports close to his heart: ex-Net Vince Carter last month and Washington Capitals star Alex Ovechkin over the weekend. Carter was with the Nets during their