Matches Played
The Spanish circuit had the week off so not much action at the top, although Ivan Navarro-Pastor got in a couple more matches at Valencia qualifying.  Timothy Aerts of Belgium got in 6 matches at Germany F2 where he qualified and reached the quarterfinals.  That puts him at #5 on the matches list with 42 played this year, a record of 33-9.  After reaching the finals of another challenger, Rafael Nadal is in a virtual tie for 9th place with 39 matches on the year.

Winning Percentage
After his third title of the year, Roger Federer enters the top 10 at #7 with a 31-6 record.

Note: next week the minimum matches will rise to 8.  No formula here, just an arbitrary number to make sure the list focuses on players who are regulars on the tour.