Djokovic, who won the Rogers Cup in Toronto earlier this month, disappointed his supporters on the tennis odds at the Bodog Sportsbook last week when he pulled out of the final match in Cincinnati against Andy Murray with a sore shoulder.

Murray, who had ousted Mardy Fish 6-3, 7-6 in the semifinals of that tournament, was leading the final 6-4, 3-0 when Djokovic called it quits. Fish had previously knocked out Rafael Nadal 6-3, 6-4 in the quarterfinals, while Roger Federer fell 6-2, 7-6 to Tomas Berdych in another quarterfinal match at that event.

But despite Djokovic's sore shoulder he's still the 11/8 tennis betting favorite for the U.S. Open right now, with Nadal at 4/1, Federer at 9/2, and Murray at 5/1.

At Wimbledon, the most recent major tournament, Djokovic beat Nadal 6-4, 6-1, 1-6, 6-3 in the final. Murray lost to Nadal in the semifinals of that event, while Federer was upset in the quarterfinals by Jo-Wilfried Tsonga.

Tsonga is part the second tier of betting favorites at the Bodog Sportsbook heading into the U.S. Open – he's at 25/1 odds to win in Flushing Meadows. Juan Martin Del Potro (10/1) and Fish (20/1) are just ahead of him on that list, with Berdych (33/1) and Robin Soderling (40/1) just behind him.

Andy Roddick, the 2003 U.S. Open champ, is then a longshot at 80/1 odds. Nadal won this tournament last year, and Del Potro took the title in 2009. Federer won this event five years in a row from 2004 to 2008.

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