According to Tignor's preview of the Indian Wells final, Roger remarked that Novak is "in his prime." This is clearly true, at least looking at the record. While Novak has never reached the heights of his amazing 2011 season, we should remember that 2011 was, by my quick estimation, one of the five or so greatest years in Open Era history - to go along with Laver's 1969, Connors in 1975, McEnroe in 1984, and Federer in 2006 (not to mention 2004 and 2005). So while Novak in 2012-14 wasn't as good as 2011, he has still been playing at a very high, elite level - his peak. His fans certainly hope that 2015 will be his second multi-Slam season, and they have good reason to.
But I bring this up because we talk a lot about the declines of Roger and Rafa, but not much about the other third of the great trinity. Presumably this is because, unlike the other two, there's been no sign of decline yet (except among his most ardent fans, who think his true level is 2011 and anything less is him not playing at his best...hey, every player has their super-biased supporters ;-)). But let us not forget that Novak will be 28 in two months. Even if players are reaching their peaks later, the clock is certainly ticking. It is hard to imagine Novak maintaining his current level for more than two or three more years.
So this is my question: When do you think we'll start seeing signs of decline from Novak and what will it look like? Novak is a very well-rounded player, but is undoubtedly best known for his incredible defense and ability to reach almost anything. Presumably the decline will start when he slows down a bit, even just a fraction. He is in incredible shape, so my guess is that this won't happen for another couple years yet, but that we might start seeing the first glimmers of it sometime in 2017, the year he turns 30.
The other big factor in decline is drive. For players in their 30s, especially with so many accomplishments, this is huge. But considering that Novak has spent so much of his career in the wake of Federer and Nadal, I could see this not being a problem - that he'll desperately want to match them as best he can.
What do you think?