I'm bothered by Sharapova being gifted a place in the US Open and it goes against what the wildcard system was intended for IMO. I accept she has done her time and served the ban and is now free to compete but I feel she should be required to qualify and earn her place like everyone else rather than be rewarded with it.
Going back to the discussion on Gatlin the other week I'm not particularly fond of someone with 2 drug cheating convictions being allowed into The Olympics and World Championships at all but I understand he was at least required to achieve the qualifying standard and win through the trials rather than being handed a place over others with clean histories.