Murray lost 1640 pts in this event alone and drops to about 3000 pts... Just to show the difference. Djokovich is now on over 13000 pts and Nadal about 12,700. federer and Wawrinka are on just over 6000 pts...So the gap between the top 2 and the rest is massive.....and Djokovic can gain even more points on Nadal now because Nadal had a 100% record up until after the US Open....Murray has every opportunity to gain a lot of points from now until the end of the season. I think he will be back in the top 4 by the tour finals..