2012 Novak Djokovic tennis season  The 2012 Novak Djokovic tennis season officially commenced on January 2 with the start of the 2012 ATP World Tour. In the semi-final, Djokovic beat Andy Murray in five sets (7–5 in the 5th set) after 4 hours and 50 minutes, coming back from a two sets to one deficit and fending off break points at 5-all in the 5th set . In the final, Djokovic beat Rafael Nadal in five sets, coming from a break down in the final set to win 7–5. At 5 hours and 53 minutes, the match was the longest final in Open Era Grand Slam history, as well as the longest match in Australian Open history, surpassing the 5 hour and 14 minute 2009 semi-final between Nadal and Fernando Verdasco. In Dubai, Djokovic defeated Cedrik-Marcel Stebe, Sergiy Stakhovsky and Janko Tipsarević, all in straight sets en route to the semi final where he faced Andy Murray and lost in straight sets, which marked the end of Djokovic's unbeaten run in Dubai since 2009. This table chronicles all the matches of Djokovic in 2012, including walkovers (W/O) which the ATP does not count as wins. They are marked ND for non-decision or no decision. The table below summarizes the worldwide ranking of Novak Djokovic in different sectors of the game according to the RICOH ATP matchfacts . Novak Djokovic has a record against the top 10, a record against the top 50 and an record against other players outside the top 50. "Ordered by number of wins" (Bolded number marks a top 10 player at the time of match, Italic means top 50)