Oh my, as I posted below - the threat of losing number 1 in now imminent for Roger Federer. After several years of retaining the prestigious ranking his loss at this Cincinnati tournament puts him at risk to falling to number 2. Federer will be ousted IF Nadal is able to win the tournament outright. However, this will not be an easy feat for Nadal because if he keeps trudging on he will encounter - Djokovic and Murray. If it were a Nadal vs. Djokovic, I would favor Djokovic for his impressive performance on hard court. Anyways, I'm pretty depressed about Federer's performance this year..
Image credit goes here: http://blog.killervirgo.com/archive/2007_08_01_archive.html