For general (introductory) information on Handicap Review (HR in this appendix), refer to the Explanatory Note on HR in section 3.15.
Clause 3.4.8 requires handicap committees and national associations to carry out a HR at least once a year, typically at the end of each playing season. The procedure has now been modified not only to apply to the HR process itself, but also to other handicap committee decisions (i.e. General Play, allotment of first handicap).
The HR is an important adjunct to the handicapping process and is mandatory for all players, in handicap categories 1 – 5. The HR will only use scores from the last 12 months of the player’s handicap record. However, not all scores from within this time frame are eligible for HR. Neither cancelled rounds nor scores with CBA -2&RO are suitable for handicap review. 9-hole scores, however, must be included.
In order to compare scores posted from different sets of tees and courses and to compare the score directly against the EGA Handicap, all scores must be ported to the Course of Standard Relative Difficult (COSRD, a course with SR=113). The Gross Differentials of such a course are fully comparable against the player’s EGA Handicap at the revision date. Once all scores are comparable, the HR calculates their mean and standard deviation. With those two metrics, the algorithm will yield a range of expected handicap, which is the player’s handicap expected handicap range. Finally, the algorithm will provide a proposed handicap; however, the proposed handicap will never be higher or lower than the current EGA Handicap plus/minus 3 strokes.
1.- All individual qualifying scores are eligible scores for HR, with the following exceptions:
- rounds where CBA was -2&RO
- rounds cancelled by the committee
- I DK indgår runder markeret med NR (no return) ligeledes ikke i HR
STANDARD GROSS DIFFERENTIAL (SGD) CALCULATION
1.- For every eligible round over 18 holes, calculate the SGD using the formula:
2.- For every eligible round over 9 holes, calculate the SGD using the formula:
Note: National Associations can include the SGD value in the Handicap Record Sheet.
1.- Only players with 8 eligible scores in the last 12 months can be included in the HR. If a player does not have 8 scores, take enough scores from the previous 12 months, in chronological order (latest first), to add up to a total of 8 eligible scores. If fewer than 8 eligible scores in the last 24 months are available, a Handicap Review cannot be performed.
2.- Calculate the mean of all SGD calculated previously.
3.- Calculate the Standard Deviation (Bessel’s corrected) of all the SGD.
4.- Calculate the Degrees of Freedom (DF) adding to the total number of 18-hole rounds, the number of 9-hole rounds divided by 2 (0.5 rounded up), and subtract one:
5.- Calculate the factor a using the two tails t-Student table(2) for an error of 0,01 and the Degrees of Freedom (DF) calculated in the previous point.
6.- Calculate the factor b using the two tails t-Student table(2) for an error of 0,05 and the Degrees of Freedom (DF) calculated in the previous point.
7.- Calculate the upper and lower estimated SGD using the formulas:
8.- Convert both upper and lower eSGD into upper and lower Index limits using the formula:
9.- If the player’s EGA Handicap falls between the upper and lower Index limits no adjustment is needed.
10.- If the player’s EGA Handicap is below the lower Index limit, such limit will be the Reviewed Handicap. Calculate the adjustment by subtracting the EGA Handicap from the Reviewed Handicap, rounding the positive difference up to the next integer (away from zero).
11.- If the player’s EGA Handicap is above the upper limit, such limit will be the Reviewed Handicap. Calculate the adjustment by subtracting the EGA Handicap from the Reviewed Handicap, rounding the negative difference up to the next integer (towards zero).
12.- For each handicap category the following maximum adjustments must be applied:
13.- Calculate the Proposed Handicap adding to the EGA Handicap the adjustment calculated taking into account the maximum adjustments provided in table 12.
14.- Any player whose initial EGA Handicap is higher than the final EGA handicap should not be adjusted up as a result of HR.
If a player, with an initial EGA Handicap higher than the final, requestsfor a handicap review, handicap committees must study carefully his scoring evolution before adjusting up the player’s handicap. This scenario may happen more often under system configuration 2 and 3, where above a given EGA Handicap, upward adjustments are not applied on a round-by-round basis.
The review process will yield the following information:
1.-Expected Handicap Range: the range where the player’s handicap is expected to be according to the results. It is represented by the range lower index, upper index.
2.-The Reviewed Handicap: when the player’s handicap falls out of the Expected Handicap Range an adjustment is needed. The Reviewed Handicap will be:
-if player’s handicap < lower index, the Reviewed Handicap will be the lower
-if player’s handicap > upper index, the Reviewed Handicap will be the upper index
The Reviewed Handicap should be the handicap the player should have according to the scores.
3.-The Proposed Handicap: the handicap proposed by the HR algorithm. The difference between the Reviewed Handicap and the Proposed Handicap will be the rounding and the maximum adjustment (category dependent).
HOW TO READ THE RESULTS
Most times the review process will not change the player’s handicap because the handicap will be inside the Expected Handicap Range. Some players will have handicaps falling outside the range; these players need a different handicap, the Reviewed Handicap. In exceptional cases the player’s handicap will be very far from the Expected Handicap Range and the Proposed Handicap (the final result of the handicap review) will not be the same handicap as the Reviewed Handicap, because of the maximum adjustment constraint of HR. In such cases, the handicap committee should consider the player for further investigation, taking into account the player development, namely in non-qualifying competitions such as Match Play events, ProAms, team competitions, etc. When studying this kind of players, the Expected Handicap Range can provide the handicap committee with valuable information about the golfing level, in handicapping terms, of the player. Such information may be considered to support a General Play adjustment to amend the player’s handicap. HR results may also be used for the purpose of studying players with a newly allotted handicap (see Guidance Note in section 3.11). When the player has submitted at least 8 eligible scores, a HR is strongly recommended.
Handicap committees can use the Expected Handicap Range and the Reviewed Handicap to support a decision to adjust a player’s handicap on the basis of General Play in such circumstances.
Publish date: 05/12/2016
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