The top eight men's tennis players in the world have advanced to the quarterfinals of the Master's Series event in Montreal this week. Should be some interesting matches the next few days. The event's major storyline is Rafa Nadal's return to the tour after his first-ever loss at Roland Garros and a missed Wimbledon. Also how new father Roger Federer performs will be fascinating to watch. And the rest of the cast potentially has its share of spoilers: Murray, Djokovic, Roddick, and Del Potro among them.
