Even money is a hefty price to pay for someone who didn’t even win the 2014 US Open. Djokovic was knocked out in the semifinals by Kei Nishikori (+1400 to win this year), who in turn fell to Marin Cilic (+2200) in the final. Djokovic only has the 2011 Open title under his belt; however, the World’s No. 1 is 48-3 in singles action this year, losing just twice on the hardcourt. Could Federer be the one to stop Djokovic? The Swiss veteran won their match in the final at Dubai back in February, and has a career record of 20-20 versus Djokovic, although that record shrinks to 7-14 since the start of the 2011 campaign. Murray is 8-19 lifetime against Djokovic; Nadal is 23-21, but 1-6 in their last seven matches.