The course I play at has 36 holes, and I always wanted to have the courses routed different. I wanted them to make one hard course. So I was looking at the slope of every nine and I was wondering if there is a way that you can mix and match. I want to play the two nines that have a rate of 149 and 147 slope is there any way you could do this. If I did this I could come up with a course that would be 7137 yards with a rating of 75 and a slope of 148

I assume that you are asking for posting handicap purposes? If so, you would need to post the 9's separately. There is no provision (that I know of) for "creating" a course when posting handicap scores.

As for the slope rating of the courses, that is determined by judging the entire track...not 9 holes at a time. Separating the nines would jeopardize the rating.

I believe that these should be posted as two different 9-hole scores, since they are technically different courses. The handicap system will combine them together (assuming there are no other "uncombined 9-hole scores). They will be combined in the manner you describe where you add the course rating of the 2 nines and take the average of the two slope ratings. Although, ultimately it won't have any impact on your handicap either way.

Maybe a GHIN expert here can confirm.

I just DID....see post #2.

I respectfully disagree with Post #2. We have different slope ratings on each 9 at my club, so if you play the front 9 twice (the more difficult of the two) the differential on your score will be lower than if you played the full course. The two nines would be posted separately, then the system would combine the score.

Your layout is a rarity. Most all courses are sloped for the entire 18 holes. For whatever reason...yours is different. That's neither good nor bad ... just different.

No need to disagree with my statement. It is still correct. The course that was referred to is not sloped separately on any one 9 hole layout ... at least that wasn't mentioned.

Your statement is not correct. That is not a rarity at all. All courses that are rated are given 18 hole and 9 hole slope and course ratings. Otherwise, it would not be possible to post 9 hole scores. Lookup any course you want on the GHIN network and you will find these various ratings. Please do some research before declaring yourself an expert at something.

http://63.240.106.223/natcrsrating/ncrlisting.aspx is a link to the USGA database.

I sampled a half dozen courses in our area and they all had front and back 9 slopes and ratings. Since the fundamental methodology for creating a (18 hole) slope and rating for a given set of tees is to start with the scratch and bogey rating of each hole individually, creating 9 hole slopes and ratings is pretty much a no brainer.

dave

Hildalgo is wrong. There is a slope and course rating for each nine. You post the 9-hole scores separately.

As a follow-up to this I can think of one reason why you might not want to post separate 9 hole scores in the case where you played '18 holes but did a mix/match on the different 9's'. This would be the case where you (for example) played 11 holes way back last winter in horrible weather and didn't finish the round (posting a 9 hole score).

If you post separate 9 hole scores for your 18 hole round that you played 'yesterday' the first thing that the system will do is to combine the first 9 posted with that old weather-interrupted 9 holes last winter. That probably isn't the 'best' way to handle that situation.

In this case you could calculate the 'right' slope/rating by

1) Adding the 9 hole ratings to get the 18 hole rating
2) Averaging the 9 hole slopes to get the 18 hole slope

I believe that most systems will allow you to manually enter a slope rating/rating for the case of a course that isn't in the system.

dave

27 hole courses often have 18 hole slope/rating numbers. My experience is that they work in the following way.

So, for example, you have three 9s, Tom, Dick, and Harry.

Tom-Dick = 18
Tom-Harry = 18
Harry-Dick = 18

And if you play on Harry-Dick, well, that's wrong.