The World Handicap System 2020
PSC Golf Chairman Review

Features of the World Handicap System (WHS) will include:

  • A consistent handicap that is portable from course to course and country to country through worldwide use of a modified version of the Course and Slope Rating System that is already successfully used in the North America, Australia and much of Europe.
  • An average-based calculation of a handicap, taken from the best eight* out of the last 20 scores but with a safety mechanism to ensure that a player’s handicap cannot increase by more than 5 shots during a 12 month period. *Change, currently from 96% of the best 10 of last 20.
  • A calculation that considers the impact that abnormal course and weather conditions might have on a player’s performance each day. This element maybe difficult to implement in Thailand. 
  • Handicap revisions processed on the day of playing, even if the competition results have not been processed. Daily updates, currently named Forecast or Predicted
  • A limit of Net Double Bogey on the maximum score for a hole (for handicapping purposes only)
    Same as the currently used “adjusted score”  
  • A maximum handicap limit of 54, regardless of gender


  • Course Condition Adjustment (CCA)– Similar to the current CSS adjustment but more conservative. Can be between -1 and 3, but more often than not it will be 0. Calculated using all scores submitted on the course that day (even if in different competitions using different tees and number of holes) as long as 8 or more golfers with a handicap Index of less than 36 and a fully developed Handicap Record (20 rounds) have played. Unlikely to be practical in Thailand.
  • Gross Differential= Gross Score – Stableford Adjustment – Course Rating, adjusted by the CCA of the day. 
  • Handicap Differential= Gross Differential x (113 / Slope Rating)
  • Anchor Point– A player’s lowest Handicap Index during the last 12 months. Similar to the “R”?
  • CAP– A suppression mechanism that limits increases in Handicap Index relative to the Anchor Point when a player is going through a spell of poor form. Deal with by H’cap review?
  • Soft CAP– Potential Handicap Index increases to a figure greater than (Anchor Point + 3) are limited by half the amount over 3, e.g. 5 limited to 4, 7 limited to 5, etc. (May not use)
  • Hard CAP– the maximum a Handicap Index can increase to is Anchor Point + 5. (May not use)
  • Extraordinary Scoring Reduction (ESR)– an adjustment to the Handicap Index after a very low score has been posted (-1 for between 7 and 9 under, -2 for 10 or more under). This reduction sits behind the Handicap Index average calculation and ‘drops off’ after 20 rounds. (May not use)
  • New Player Handicaps are initially allocated at 2 less than the best of 3 x 18 hole cards submitted. Subsequent Handicap Index calculations change as more scores are entered. e.g.
    4 scores: 1 less than the best
    5 scores: the lowest score
    6 scores: 1 less than the average of the 2 best
    7 to 8 scores: average of best 2,
    9 to 11 scores: average of best 3,
    12 to 14 scores: average of best 4,
    15 to 16 scores: average of best 5,
    17 to 18 scores: average of best 6,
    19 scores: average of best 7,
    20 scores+ average of best 8,
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