 Federer 's versatility has been summarised by Jimmy Connors : " In an era of specialists , you 're either a clay court specialist , a grass court specialist , or a hard court specialist ... or you 're Roger Federer . " 
 Federer <a href='null_genetive' title='1'><mark>'s</mark></a>versatility <a href='been_done' title='2'><mark>has</mark></a> been summarised by Jimmy Connors : " In an era of specialists , you 're either a clay court specialist , a grass court specialist , or a hard court specialist ... or you 're Roger Federer . " 
Federer  versatility done been summarised by Jimmy Connors : " In an era of specialists , yhu 're either a clay court specialist , a grass court specialist , or a hard court specialist ... oryouuu 're Roger Federer . "