Thanks Mr. Duong. The reason it bothered me is that I recalled some study somewhere being done which all but proved that non-seeded placement was not being done randomly at certain tournaments. I think the US Open was an example of this, where top players have seemed to always get the "weakest" non-seeded opponents, supposedly to enhance their chances of moving on to later rounds. As I recall Roland Garros appeared to be the most random.
So I was curious if each tournament had some measure of control on the proceedings.
yes it was this article :
it had been discussed in the "do you think that draws are rigged" thread.
It targetted the US Open for both men and women's top seeds' early round opponents but other slams appeared random for that question
, not only Roland-Garros (RG's specificity was that women's top seeds had tougher opponents than expected)
Officially, there's no statistical control being made a posteriori that I have heard of : in that case it was fans who questioned ESPN who questioned the tournament.