Can Roger Federer reclaim his No. 1 ranking to Rafael Nadal?

Definitely! i think 2008 is federer's worst year by far in recent history(especially the 1st half of 2008) and federer cannot be any worse than he was in early 2008 so the only direction federer can go is up in my opinion. right now federer is 1070 points behind nadal. remember there are still some master tournaments(madrid, paris) toward the end of the year and the season ending championships and also the australian open early next year and indian wells and miami sony erisson. if federer can do well(better than nadal) in these tournaments he can get his #1 ranking back before the clay season next year if not earlier.