I've seen certain pundits say Djokovic is the POY. But that can't be so. The guy didn't win a slam after the Aussie O. He lost to Isner in IW, went 0 for Europe and didn't medal at the Olympics. The POY has to be either Murray or Federer and I'd tend to lean toward Murray only because Fed got beat in USO quarters and Murray won 2 of the 5 big events and got to either finals or semis of all the rest.Here is the beginning of a recent chapter of mine from my magnum opus:Djokovic DownfallAfter his epic win at the Australian Open in Januaray, no pundit would've predicted Novak Djokovic would be shut out of the winner's circle in the three remaining slams in 2012. But after Andy Murray denied his week-younger counterpart in the fifth set of the U.S. Open Finals, that is exactly what happened to the high-flying former No. 1. Not only had Djokovic gone down in flames at Roland Garros, Wimbledon and Flushing Meadows, incredibly he went empty-handed in medals at the Olympics.So much was expected and so much was at stake for the 25-year-old--a first French Open crown, a "Djokovic slam" of four straight slam wins and a golden opportunity to distance himself from his two main rivals, Rafael Nadal and Roger Federer--and while he certainly didn't fall flat on his prodigious jaw, Djokovic came back to the pack after his historic 2011 season.Do you agree with me that Djokovic's season was a downer for him? Do you also agree with me that Djokovic's big celebration at the Aussie O hurt him as it emboldened his chief rivals? Here's how I bolster that argument in a subsequent chapter of the book: But on another level, Djokovic’s overblown histrionics marked what in hindsight could be evidenced as a fatal flaw. In overshadowing Nadal after their brilliant display of power baseline tennis, Djokovic’s rivals now had Exhibit A to study when planning the beheading of the new king. And Djokovic, instead of acting like a champion who’s been to the winner’s circle before, may have stoked his own fire too manically. For so long, he had been the pursuer, always chasing Nadal and Roger Federer, but rarely toppling them. Now he had to fully believe in his own miraculous powers of recovery and domination. “Uneasy lies the head that wears a crown,” Shakespeare wrote in Henry IV. But in Djokovic’s case, after defending his Australian Open crown, maybe winning big now seemed like a rite and his destiny. Perhaps his head became too big for the crown to fit comfortably upon. In his last two slam wins at the 2011 U.S. Open and the 2012 Australian Open, the new world No. 1 had twice come back from the brink of defeat at the hands of both Federer and Nadal to record unforgettable victories.