Chase for the Sprint Cup - Wikipedia.com
The Chase for the Sprint Cup, originally known as "The Chase for the Championship" during its creation, and then "The Chase for the Nextel Cup" (from 2004 to 2007) is the championship system used in NASCAR's top division, the Sprint Cup Series. The Chase was announced on January 21, 2004, and first used during the 2004 Nextel Cup season. The format used from 2004 to 2006 was modified slightly for the 2007 season. The 10 race Chase pits the 12 drivers with the highest "regular season" points against each other, while racing in the standard field of 43 cars. Beginning with the 2008 Sprint Cup Series, the Chase became known by its new name as a result of the merger of Nextel Communications with Sprint Corporation. The driver with the most points after the final 10 races is declared the champion.