May
14
Most of you might already know the answer, but perhaps, there are others like me who think we know the answer but don’t really know. So let me share with you what I found out along the way.
First, the definition:
A “Handicap Index” is the USGA’s service mark used to indicate a measurement of a player’s potential ability on a course of standard playing difficulty. It is expressed as a number taken to one decimal place.
Now that you know the definition, let’s go through the USGA handicap formula:
Step 1: Determine the number of handicap differentials to use (see “Ever wonder what the Course Rating and Slope Rating represent” on “handicap differentials”). Under USGA handicap system, you need to submit at least five scores before the handicap index may be calculated. Some local clubs/association may demand more scores to be submitted because the accuracy of the handicap index is directly proportional to the number of acceptable scores submitted. For illustration purpose, let’s use 20 scores.
Step 2: Calculate your handicap differentials ((adjusted gross score – course rating) x 113 / slope rating)
Step 3: Average the number of handicap differentials being used. You do not average ALL the handicap differentials submitted. If you submitted 20 scores, you will only average the 10 lowest handicap differentials.
Step 4: Multiply the average by 0.96 (this factor is known as the Bonus for Excellence. It is the incentive for players to improve their golf games)
Step 5: Delete all number after the tenths’ digit. Do not round to the nearest tenth.
Example:
Total of 10 lowest handicap differentials (from the most recent 20 scores submitted) = 154.8
Average = 15.48
Multiply by 0.96 = 14.861
Delete all digits after tenths = 14.8
This is your handicap index … 14.8
Noticed how the formula only picks your 10 lowest handicap differentials from 20 scores submitted? So the next time you play a terrible game, don’t forget to submit your score. Submission of scores is mandatory and if it is an anomaly, rest assured that it will not be taken into account in calculating your handicap index.
In addition to the above, there is a provision under USGA Handicap System to reduce the Handicap Index calculated by the above method if the player posted exceptional tournament scores. We’ll save that for later.
Enjoy your game!
David
(reference: USGA Handicap System 2008-2011)
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