Djokovic seemed to many people to be the heir apparent to #1 as early as early 2008 when he won that Australian Open so convincingly. However it turned out to be Nadal owning most of the next 3 years with Federer as his main rival. What he did in 2011 was what many were expecting him to do years sooner, but he wasnt ready for it it turned out. I dont think anyone thought Tsonga was tennis's next big thing, win or lose there. It was one of those lightning in a bottle kind of runs, and one could sense even then it was probably now or never for him.
TMF on Jan. 2011- Serena is washed up for good, TMF in Oct. 2009- Nadal has won his final slam, TMF in 2011- Woz will beat Serena at U.S Open