1.1) How is a Handicap Index calculated?
The Handicap Index formula is based on the best Differential(s) in a player’s scoring record. If a player’s scoring record contains 20 scores, the best 10 Differentials of the most recent 20 are used to calculate the Handicap Index.
As the number of scores in the scoring record decreases, the percentage of scores used in a scoring record decreases from the maximum of the best 50 percent. If the scoring record contains 9 or 10 scores, only the best three scores (30 to 33 percent) in the scoring record will be used. Thus, the accuracy of a player’s Handicap Index is directly proportional to the number of acceptable scores posted.
A Handicap Index must not be issued to a player who has returned fewer than five acceptable scores.
The Handicap Index computation will be managed by the GolfRSA Handicap Server. Those players wishing to perform an approximate check may do so as follows:
Step 1: Use the table below to determine the number of Differential(s) to use:
Step 2: Select the number of differentials from the above table
Step 3: Average these to obtain an intermediate Handicap Index accurate to one decimal place.
Step 4: Apply the Bonus of Excellence (currently 0.96) factor applicable to the intermediate Handicap Index to one decimal place. This result is known as the players Handicap Index.
Handicap Index = Average of the lowest valid differentials X 0.96
1.2) How often is my Handicap Index calculated?
In order to be equitable, Handicap Indexes must always be kept up to date, and are revised daily at 4am. Although players are allowed 72 hours after completing a round to record a score, this period should not be used to delay score entry when the club terminal is operational.
Clubs are encouraged to make it a condition of their competitions that all scores should have been entered at the end of a round and prior to the start of any further round. When a previous day’s score is only entered the following morning, the player should be allowed to play off his current Handicap Index as reflected on the system unless such score was a second Exceptional Score and resulted in an immediate recalculation of the payers Handicap Index.
Where a terminal is offline, the player should play off their last computed Handicap Index as reflected on the offline terminal or on the handicap system when viewed on the internet or via the HNA Handicaps app. Once the terminal goes back online, all entered scores will be reflected in the player’s Handicap Index and the system will calculate the player’s Handicap Index at 4 am.
Handicapping Committees should, however, use discretion to obviate undue fluctuating of Handicap Indexes.
1.3) I’ve played very badly of late. Why is my Handicap Index not moving out?
It’s important to realise that your worst differentials aren’t considered in your Handicap Index calculation. Only your 10 best differentials are (while the 10 worst ones are disregarded). This means that it’s quite normal if you play a number of bad rounds and not see a change in your Handicap Index.
1.4) That’s all good, but how is it possible that a very bad score has caused my Handicap Index to come down and not go out?
In this situation, you need to compare the differential you entered with the differential that, because of the new entry, is no longer considered in the Handicap Index calculation—the 21st most recent differential, in other words. In all likelihood, the new differential is better than the old one. You may also have unknowingly received a penalty (please see section 5 for more penalties).