This is effectively a penalty on those players that skip a playoff event.
In November 2008, the changes were designed to help ensure that the championship would not be won until after the final playoff event.
Points won in playoff events are added to those for the regular season, and the fields are reduced as the playoffs proceed.
After the third playoff event, the top 30 players move to the final event.
He played in all four playoff events, recording finishes of missed cut, T47, T14 and T29.
The win moved him to first place in the FedEx Cup standings going into the final playoff event.
The Tour ran this scenario of how the system would have worked in 2005, but with a different mix of playoff events.
There he finished 8th at The Barclays to ensure further progression to the second and third playoff events before being eliminated in 62nd position.
This time, however Simpson missed the cut at the second playoff event and was eliminated.
The playoff event in 2006 was the first time golf has ever used a postseason of any kind on any tour.