Originally Posted by out_here_grindin
that's why I didn't include him
From the poll options, in terms of results/body of work, probably Djokovic. After winning Indian Wells in 2008, in his 52 week ranking table his last 4 grand slam results were SF,SF,F,W and he was the defending champion of 3 masters series events plus Estoril and Vienna. Many players have held the world no. 1 ranking with weaker results than that, and Djokovic couldn't even get to world no. 2 with those results (of course he had to wait until this year to reach world no. 2).
In terms of talent, Michael Stich. He could have been one of the greats if he had more drive and determination. Despite winning a slam he is still a much bigger underachiever than Rios and Nalbandian in my opinion.