Djokovic will reclaim the top rank.
Murray will not win a Slam.
Del Potro will win US Open.
Nadal will win one Slam: Roland Garros.
Federer will have a better season than this (2013) one - with deeper run @ Slams (no titles) and three titles.
Del Potro will get to No. 2 by year end. Nadal 3.
You got more? No, you don't!!!!!!!!