Interesting article from tennisweek on the topic you may enjoy.
Champions Race Closer than Ever
Photo by Susan Mullane By Heather Holland
10/08/2002
The ATP season
ending championships is just four weeks away and only two players have qualified.
The competition for the last six places at the Tennis Masters Cup-Shanghai is
the closest since the Race began three years ago.
The top seven players in the Champions Race automatically qualify and the eighth berth goes to either a current Grand Slam champ who isn't in the top eight, but is in the top 20, or the eighth ranked player. So far, only Lleyton Hewitt and Andre Agassi have qualified this year. No. 3 ranked Marat Safin has taken a wild card into Lyon and will play Madrid, St. Petersburg and Paris in order to solidify his position. No. 4 Juan Carlos Ferrero is scheduled to play Vienna, Madrid Basel and Paris. Tim Henman is currently No. 5 but was forced to take this week off for a shoulder injury. He hopes to play Madrid, Basel and Paris and qualify for the first time since 1998.
Carlos Moya, in sixth position, must do well at Vienna, Madrid, Basel and Paris to remain in the top seven. Albert Costa is counting on a good indoor season, traditionally not his best surface, to stay in the running. No. 8 Tommy Haas needs to do well these last four weeks to qualify for his first season ending championships. American Andy Roddick is just 10 points out of seventh place and if he does well in Madrid, Basel and Paris will make his first appearance as well.
No. 10 ranked Roger Federer needs good results in the last four tournaments to make up the 40 points he needs for seventh position. Pete Sampras, while in 12th position, will not play any more tournaments this year and is likely not to qualify. Australian Open champ Thomas Johansson has a chance to qualify if he can amass enough points to pass Sampras. Then, if Costa remains in top seven, Johansson would garner the eighth spot.