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Rules Corner


 THE RULES CORNER

Articles about everyday rules we encounter, not the strange, odd ball situations that make it to the news
or even articles questioning  Do you know your rules?
"

1. HOW TO EASILY FIND A RULE IN THE RULE BOOK  ( click the heading to open the pdf file)

2. CUSTOMS  AT  OUR  CLUB

3. NEAREST  POINT  OF  RELIEF

4. UNPLAYABLE LIES - Rule 28

5.PROVISIONAL BALL 

6.THE REASON WhHY A PROVISIONAL BALL CAN'T BE USED WITH AN UNPLAYABLE LIE

7.  COURTESY ON THE GOLF COURSE

8.  WHAT SCORE TO PUT DOWN IF YOU PICK UP OR DON'T PLAY A HOLE

9. Taint Necessarily So - (Some golfers believe these are rules, but they are only myths!)

10.   Some Actions that Raised Questions

11.  Do Handicaps Work?

12. Relief from Movable Obstructions: In/On vs. Against/Near

13.How Handicaps Are Actually Figured

 Ask most players what their handicap is based on, and they will reply, "It is based on my best 10 scores out of my most recent 20 scores".  Well, sorta.  A score of 85 on an easy course like Los Lagos isn't the same as an 85 at Santa Teresa, and especially at Pasatiempo shooting 85 is much harder.

For that reason, Ghin records both the Score you post and the corresponding Differential.  The differential (Diff.) is made up of not only your score, but also the rating, slope, and the tees on the course you played.  That information comes up automatically on your home course (or courses) when you post a score, but you must put it in on other courses or if you are posting an 'away' score at your home club.

USGA uses the differentials to figure your monthly Index. This index is 96% of the average of your ten lowest differentials, and appears on your PWGA Revision Update each month.  (This is the general rule, but may be modified by Tournament Scores, etc.)

You will see all the data for your last 20 games as the last screen anytime you post a score, so take a minute and look at it before you hit the final 'Return'.  You also can see it on your computer by logging into your eClubhouse account.

Below are some examples of rating/slope affect score at different courses.  Comparison at Santa Teresa is for our old White Tees, because the slope/rating for the Blue Tees and new White Tees may change.

The formula for a Diff. is fairly simple, but contains a Constant of 113 which (I believe) is considered an 'average course'.

Diff. = (Score Rating) *113/Slope       -        Example: 100 on Santa Teresa, rating 74.4, slope 126:

Diff. = 100-74.4 [=25.6]   *113 [=2892.8]    divided by 126  [=22.96, round up]  so your Diff. is 23

[numbers in brackets like these show the result of the previous calculation]

 If you play some other courses the way you played a 100 at Santa Teresa, here is what you would score:

Course

Rating

Slope

 

     Score would be

Los Lagos- red

65.1

108

 

87

 

Santa Clara

71.1

114

 

97

 

Santa Teresa

74.4

126

 

100

 

Shoreline

70.7

120

 

95

 

Coyote Tournament

70.4

124

 

100

 

 

Just for fun, here are those same courses showing what the differential for scores of 85, 95, and 105.

 Course                   Rating   Slope        Score  Diff.             Score                  Diff.     Score     

Los Lagos red       65.1       108            85  20.8       -        95  31.3              105   41.8

Santa Clara             71.1       114            85  13.8       -        95  23.7              105   33.6

Santa Teresa            74.4       126            85  9.5         -        95  18.5              105   27.4

Shoreline                  70.4       120            85  13.5       -        95  22.9              105   32.3

Coyote Tournament  70.0       128            85   13.3     -        95   22.4              105   31.5

 

However, be aware that I used some old cards to get the Rating & Slopes of these courses so it is possible that they have changed.   Check a new card to see if the information above is still correct.  If not, figure the new and correct Differential using the formula above.  Also remember the data on the Pro Shop Card may not be the same as the one the Women's Club uses.  Ghin rates a player according to the information given by the Handicap Chair of each group.