We recently published some changes to the way tournament results are displayed to implement one of the most frequently requested enhancements: displaying the historical rating of a player when viewing past tournament results.
Previously, all views of tournament results would display a players current rating no matter when the event took place. Now, the player rating displayed for Official Results is the rating the player had at the time of the event. This includes current and former members.
On the Current Registration and Unofficial Results views, the player rating displayed for active members is their current rating. If a player is not a current member, we do not display a rating.
http://www.pdga.com/announcements/website-update