Then, early the next year, the eight best-performing players from the Super Series events are invited to compete in the PSA World Series Finals (a similar event to the ATP World Tour Finals).
ATP World Tour Finals, the year end championship event on the men's professional tennis tour, formerly known as the Tennis Masters Cup
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It was the 25th edition of the year-end singles championships, the 21st edition of the year-end doubles championships, and both were part of the 1994 ATP Tour.
It was the 27th edition of the year-end singles championships, the 23rd edition of the year-end doubles championships and both were part of the 1996 ATP Tour.
It was the 31st edition of the year-end singles championships, the 27th edition of the year-end doubles championships, and both were part of the 2000 ATP Tour.
It was the 32nd edition of the year-end singles championships and was part of the 2001 ATP Tour.
It was the 28th edition of the year-end doubles championships and was part of the 2001 ATP Tour.
It was the 33rd edition of the year-end singles championships and was part of the 2002 ATP Tour.
It was the 34th edition of the year-end singles championships and the 29th edition of the year-end doubles championships, and was part of the 2003 ATP Tour.
It was the 37th edition of the year-end singles championships, the 32nd edition of the year-end doubles championships, and was part of the 2006 ATP Tour.
It was the 38th edition of the year-end singles championships, the 33rd edition of the year-end doubles championships, and was part of the 2007 ATP Tour.
The top eight players (or teams) with the most countable points accumulated in Grand Slam, ATP World Tour and Davis Cup tournaments during the year qualify for the 2010 Barclays ATP World Tour Finals.
The top eight players (or teams) with the most countable points accumulated in Grand Slam, ATP World Tour, and Davis Cup tournaments during the year qualify for the 2011 Barclays ATP World Tour Finals.