If you are referring to the players under the age of 20 that are playing in the french open main draw/qualifying draw then only Brydan Klein and Bernard Tomic are competing. Brydan is already out. Bernard got a wildcard into the maindraw and will be playing next week.
If you are talking about aussie players that are actually competing in the junior Roland Garros tournament then there will probably only be around 3 or 4 at most on the boys side because we aren't doing as well in juniors this year as previous years.
Well it looks like there is only one junior this year,,,in boys Tomic ...
thought we had a heap of talent in this age group like,
chaplin, sanders, barker, hoh, verryth , szabo, maraga, duckworth, banes, mitchell, to name a few,,, we had more than one in over last few years
Hope we have more than one player at Wimbledon in juniors.