I know it is still early, but tennis is becoming a sport for younger generations rather quickly...i.e Nadal. Who is going to fill the gap, or contend with murray and djokovic and federer to a lesser extent (maybe, hard to say..). I think Raonic is going to crack the top 10 soon and move in towards the top five. Who else is there? Del Potro..shame he ever got hurt. Is it possible Nishikori is for real? Raonic became my favorite player after his breakout run at the 2011 Australian. What do you guys think?