"Rookie" might be too strong a word for the members of our U.S. Olympic Wrestling Team (they have extensive national and international experience), but only 2 of the 16 wrestlers have competed in the Olympics previously.
On the one hand, this inexperience might give them a disadvantage in the Olympic competition. Maybe.
But on the other hand, to the extent experience matters, these wrestlers will all have a chance to use their Olympic experience four years from now. Our inexperienced team in 2008 might be the precursor to a dominant, experienced team in 2012.