One can go one about Nastya's bad form but Azarenka has not won a main draw match since losing in the 3rd round of Miami. Infact she hasn't won a match of any kind since qualifying for Roland Garros. After Wimbledon she did not play for seven weeks. She came back this week at New Haven and lost in the 1st round of qualifying to Castano 6-1 6-2. One should add Castano herself failed to qualify losing in the final stage of qualifying.
As poorly as Nastya has been playing, nothing she has done compares with this and I really am dubious whether Azarenka will even be able to make a competitive match out of it.
I should add I am relived that Nastya didn't get a tougher 1st round because, all that said, I am under no illusions that Nastya is playing well.