<P> Since 1973 , 26 men have been ranked No. 1 by the ATP , of which 17 have been year - end No. 1 . The current world number one is Roger Federer . </P>
<P> Since 1973 , 26 men have been ranked No. 1 by the ATP , of which 17 have been year - end No. 1 . The current world number one is Roger Federer . </P>
who is ranked number 1 in mens tennis
who is ranked number 1 in mens tennis
Roger Federer
Roger Federer