Matches Played
Juan Martin Aranguren moves into 2nd place and closes in a bit on Pedro Clar at the top.  We now have 7 players with 100 matches or more which is tied for the most since 1999, which occurred in 2004.

Winning Percentage
Although Roger Federer won the Masters Cup, he took a loss in the round robin but stays in 3rd, although the top two have only played in limited action.  Rafael Nadal suffered two losses at the Masters Cup and slips to 6th.  Novak Djokovic lost all 3 of his round robin matches and falls to 10th.