The way modern sports rankings work can often through up oddities and tennis is no exception. In order to make sure things are as fair as possible, players are essentially ranked on their ability to be consistently very good rather than occasionally brilliant. On occasion this results in a number one player who, although undoubtedly talented, is yet to win on the biggest stage with Caroline Wozniacki a case in point.
 
Despite occupying the world number one spot, the Dane is yet to win a Grand Slam and following her fourth round defeat there has to be real question marks about her ability to do so and the US Open tennis odds 2011 reflect this.
 
Unsurprisingly, questions have already been asked about whether she really deserves to hold on to the top spot after she lost 1-6, 7-6 (7-5) 7-5 to 24th seed Dominika Cibulkova and Wozniacki has already defended herself.
 
"Well, to be honest, I don't really care what people think or say or do," she said. "I cannot really do anything. I did my best and it wasn't good enough."
 
However, whether she deserves to be world number one is something of a moot point really as it seems to have little or no bearing on her ability to win a Grand Slam and anyone looking to place a US Open bet should bear this in mind.
 
The fact is she has only made it to one slam final in her career and unless she manages to win when it counts few people will remember her ranking in 2011 15 years down the line when her career is coming to an end.