I don't know why but there is a strange coincidence

in my 2k9. I don't know why e.g. when I'm playing with Denver Nuggets, Carmelo has always 3-4 rebounds per game and e.g Billups or Dahntay Jones has the same. What I'm supposed to do to increase Carmelo's rebounds per game ? Is there any way or it's just depends on me?

Thank you for answers
P.S. Carmelo isn't only player, who has lesser rebounds than he should[ofc, when i'm playing

]
Sorry for my mistakes, I'm from Poland and my English isn't so beautiful
