If Murray wins tomorrow the top 4 would

kragster

Hall of Fame
have each won Wimbledon once in the past 4 years.

Other similar opportunities for the top 4 to take turns to win a slam would have been Murray winning AO 2010 or 2011 and he will have a chance at USO 2012. Also I believe del Potro was no 4 after his USO win although he hasnt consistently been in there so not sure whether USO 2008-11
 
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