Starting Jan. 1, all golfers will transition to a centralized platform for handicap computation to support the changes under the new World Handicap System. To prepare for this modernization, the new GHIN Mobile App, ghin.com & Club kiosks as well as other handicapping products supported by AGAs will be temporary unavailable for posting from Jan. 1-5. Golfers should post 2020 scores starting on Jan. 6.