No matter how great Nadal was - I now really doubt whether he can make his comeback even closely successful compared to what he did before. This is not mainly because of his age but more of the fact he was absent for such a long time. No matches, no competition, for many many weeks no training and last but not least, not being on the tour and perhaps having a life outside of that surely must change Nadals point of view somehow? So my question is - as I am only medium familiar with tennis history: What was the greatest comeback by any tennis player after being absent for more than 6 months? This means no matches at all, not just skipping the grand slams or dropping out of the rankings!