Most consecutive Slams played. LOT of active players making the list. Reason? PEDs? Can there be anything else?

Men 1.  Wayne Ferreira 56 2.  Stefan Edberg 54 3.  Roger Federer 53 4.  Fabrice Santoro 46 5.  Dominik Hrbaty 44  Feliciano Lopez 44 7.  Tommy Robredo 41  David Ferrer 41 9.  Fernando Verdasco 39 10.  Tomáš Berdych 38 Note: Bold denotes an active record through the 2013 Australian Open.

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