Advertisement
Advertisement
Sign in to follow this  
Followers 0
Uthinkso

9 Hole Rounds and Handicaps

64 posts in this topic

In my league, which plays 9 holes we figure our handicaps based on a 9 hole round like most. Then another player asked my cousin what his handicap is for 18 holes and he said it was a 5, but he is a 5 for 9 holes. So this started a heated debate on what is right. I told him at best I'll say your a 10 because your a 5 for 9 holes.

I know I'm closer to the right track than he is, but can somebody clarify this issue for me?

0

Share this post


Link to post
Share on other sites

Sign up (or log in) today! It's free (and you won't see this ad anymore)!

Sign up (or log in) today! It's free (and you won't see this ad anymore)!

USGA handicaps are based on 18 holes.

Yeah. Also important to note: handicap index isn't necessarily the same as handicap.

If your course handicap comes out to 5.4 that rounds down to 5. Doubling it would make it 11 (10.8). Indexes have a decimal point. Course handicaps are in full shots.
0

Share this post


Link to post
Share on other sites
Awards, Achievements, and Accolades

If you want to have a laugh and learn about 9 hole handicaps at the same time, do a search on 'brah?', take the longest thread in the search and you'll get all the info you need :).

Just make sure you don't bump that old stinker of a thread.
0

Share this post


Link to post
Share on other sites

In my league, which plays 9 holes we figure our handicaps based on a 9 hole round like most. Then another player asked my cousin what his handicap is for 18 holes and he said it was a 5, but he is a 5 for 9 holes. So this started a heated debate on what is right. I told him at best I'll say your a 10 because your a 5 for 9 holes.

To attempt further clarification, your league handicap is not "official" it is only an approximation of a handicap and depending on the method used it could vary greatly from a USGA handicap.

The "approximation" of doubling your 9-hole league "handicap" is perhaps slightly reasonable but should not be passed off as an official USGA handicap index. It fails to take into account slope and rating of the course you normally play compared to the course you are stating a handicap at and it is not representative of your scoring potential over 18 holes to simply double your "best average" 9-hole score for your 18-hole legitimate handicap. The best method would be to utilize the USGA handicap caluculations and combine two consecutive 9-hole rounds to determine your actual handicap index. Regarding the clarification you are requesting, to state that he is a 5-handicap would be well outside of his scoring ability with respect to par. He would indeed be closer to a 10-15 handicap through 18. Regards, -E
0

Share this post


Link to post
Share on other sites

To attempt further clarification, your league handicap is not "official" it is only an approximation of a handicap and depending on the method used it could vary greatly from a USGA handicap.

Well said. You NEVER double what you took on 9 holes because 18 holes adds elements that may not be as favorable to you when you do 9 (such as fatigue). Always base the handicap off of 18.
0

Share this post


Link to post
Share on other sites

The USGA handicap manual defines 9-hole handicaps and tells you what to do if you have one (section 10.5):

A nine-hole handicap is a Handicap Index (N) if the club follows the USGA Handicap System. A nine-hole handicap, or Handicap Index (N), may be used in inter-club play against other players with nine-hole handicaps. If a competition requires a Handicap Index, a Handicap Index (N) may be doubled for 18-hole play.

It goes on to say that if you need a 9-hole handicap and only have a normal handicap, you halve your Handicap Index (and apply some rounding). So it seems that there is some legitimacy to a 9-hole handicap, but it's not clear to me exactly what the limits are.

0

Share this post


Link to post
Share on other sites

I know that when calculation your handicap, it combines 9 hole rounds together to make a single 18 hole round.

How does it choose which 9 holes to combine.

Example:

Round 1: 7/31 45
Round 2: 8/14 44
Round 3: 8/19 44

So I assume it takes round 1 and 2 and combines them and then will combine round 3 with the next 9 hole set I play. Is this correct?
0

Share this post


Link to post
Share on other sites

So I assume it takes round 1 and 2 and combines them and then will combine round 3 with the next 9 hole set I play. Is this correct?

yep. see 10-5 of the

USGA Handicap Manual for details.
0

Share this post


Link to post
Share on other sites

There are a few courses in my area that have 27 holes (blue, green, and white) for play. When I go to them, I usually play 18 holes. How would I figure out the course rating and slope for all 3 9-holes courses? Would they just be half of a normal course rating and slope?
0

Share this post


Link to post
Share on other sites

I think it has to be rated by the USGA or Canadien counterpart. It shoud be printed somewhere on the scorecard for each tee box or a listing of course ratings. The 9 hole course that I'm learning on doesn't have one so I just list it as "hard". lol
0

Share this post


Link to post
Share on other sites

The problem is, it only gives me the course rating and slope for the 3 18-hole combinations. (i.e. green/white, red/white, green/red). It doesn't give me the course rating and slope for 9-hole course.
0

Share this post


Link to post
Share on other sites

The problem is, it only gives me the course rating and slope for the 3 18-hole combinations. (i.e. green/white, red/white, green/red). It doesn't give me the course rating and slope for 9-hole course.

When you combine 9 hole rounds into an 18 hole round, the rule is that rating = rating_1 + rating_2 and slope = (slope_1 + slope_2)/2 (i.e., you add the ratings and average the slopes). If you're handy with algebra you can work out the 9-hole ratings for each 9 from the info you have. I'm bored so I'll help you out here

I'll call the ratings and slopes for the various pairs R_12, R_13, R_23, and the slopes S_12, S_13, and S_23. These are for 9-holes #1 paired with #2, #1 with #3, and #2 with #3, respectively. The ratings for each 9 are then R_1 = (R_12+R_13-R23)/2, R_2 = (R_12+R_23-R_13)/2, and R_3 = (R_13+R_23-R_12)/2. The slopes are S_1 = S_12+S_13-S_23, S_2 = S_12+S_23-S_13, and S_3 = S_13+S_23-S_12.
0

Share this post


Link to post
Share on other sites

Thanks. I just finished calculating them now. (I started about 20 minutes ago)
0

Share this post


Link to post
Share on other sites

Is it as simple as dividing the slope and rating by 2? Seems like if I enter a 45 the calculator will think I shot an amazing round..
0

Share this post


Link to post
Share on other sites

You don't need to do anything with the slope and rating. The calculation is going to give you a 9-hole handicap though - you'd need to double it if you want to compare it to a standard 18-hole handicap.

Technically it wouldn't affect your official handicap though until you played another 9 that could be combined with the first 9. To get an 18-hole slope and rating from 2 9s, you add the ratings and average the slopes. I.e., if you played the same 9 hole course again you'd double the rating and use the existing slope. Or, if you were to play your next 9 at an 18 hole course, they would have separate ratings and slopes for each 9 and you'd use the rating/slope for whichever 9 you played.
0

Share this post


Link to post
Share on other sites

Is it as simple as dividing the slope and rating by 2? Seems like if I enter a 45 the calculator will think I shot an amazing round..

I infer from a local course near me that GAM (Golf Associaiton of Michigan) put ratings on the front & back 9 and the final 18 is the summ of the ratings and the slope is the average. For instance, here is the Willow Metropark ratings & slopes:

Blue Tee, 70.0/124 Blue Tee Back 9, 34.6/125 Blue Tee Front 9, 35.4/123 Gold Tee, 65.9/108 Gold Tee Back 9, 32.3/104 Gold Tee Front 9, 33.6/112 White Tee, 68.5/121 White Tee Back 9, 33.8/121 White Tee Front 9, 34.7/122 Let me know which course/tee & I'll look it up for you at the GAM website if you don't have a membership.
0

Share this post


Link to post
Share on other sites

...the final 18 is the summ of the ratings and the slope is the average.

Yeah, like I said.

The OP said it was a 9 hole course though, in which case he would just use the course's slope and rating.
0

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0



  • Want to join this community?

    We'd love to have you!

    Sign Up
  • 2017 TST Partners

    PING Golf
    Leupold Golf
    Snell Golf
    Talamore Golf Resort
    Lowest Score Wins
  • Posts

    • These are myths that I hear a lot. Some are just eye rolling trivia but some can hurt. 1. Tour pros continuously vary their shot shape based on hole demand. Not true. They have one predominant shot shape they play almost all the time. Only when in jail or extreme condition do they actually try anything out of their comfort zone - which is smaller than most folks think. 2. Tour pros are like swing doctors. They know everything there is to know about the golf swing. Nope - they are simply phenomenal listeners and executors. 3. You must understand the swing in it's entirety to learn and become better - Yeah, good luck on that path.   4. To have lag just hold the angle of the shaft to forearm until impact. - Lag is a result of good mechanics and club position and path. Can't force it. 5. You must have a superlight grip pressure (2-3 on a scale of 1 to 10) to hit good shots. - While white knuckling is just bad, you do need more grip pressure than you think.
    •   The problem is the twitter length version, get it as close to the hole as possible, is easy to read as, hit the longest club.  Really the argument in LSW (backed by stats), is around a multi-faceted risk assessment.  Simplifying less than the twitter version, hit it as far as possible without bringing "too much" risk into play.  The long version is basically a law of total probability argument, where you assess the probability of various outcomes with each current shot choice, and weight them by the average shots to hole out given each outcome, and choose the lowest. For example, you're sitting at 250 on a par 5.  You go through the potential outcomes of an 8i and 3i and estimate average shots to hole out from each: on target, slightly off target, chunk, blade, in jail, in hazard, open look but super penal rough, OB, whatever.  Then you think about the chances of these outcomes, and calculate the total expected score from each choice. The point in LSW is that you can't go through a bunch of equations for every shot, but if you're accurate about your average shot dispersions across clubs, then the typical bogey or better golfer is often overestimating the increase in risk from going for the longer shot, and underestimating the decrease in expected number of shots to hole out from getting it closer. The rule of thumb is that if there's not something in the layout that is a big risk at the longer distance but not at the short one – so in your case lateral hazard or big fairway thinning or big fairway bunker or much or penal rough or the like that starts at 75 yards out – then generally your lower expected total score is from hitting the longer club.  The strokes you lose when you do hit an errant long iron but wouldn't have hit an errant short iron are more than made up for by the strokes you gain from having an approach half as long when you don't hit an errant shot. Of course, it's always case by case and player by player.
    • I've been working on changing that for two years!
    • If this is true, then club fitting would be purely entertainment also and make no difference.  We could all use different clubs every time we played with no measurable effect on our score.  I'm not so sure all the time, money and effort that has gone towards studying the benefits of club fitting and developing custom club programs and fitting carts and training techs how to conduct a club fitting session would have been spent if it's all just "entertainment". Now, will there be a huge difference between the e6 and e7 for the average player?  No.  They are both 3 piece distance balls with the same type of cover, so the differences are not huge.  Noticeable, but not huge.  The difference between an e6 and a Pro V1 though will be dramatic.  And the number of players that played the Pro V that have been recommended the e6 are in the tens of thousands.  Not only is there a difference in the performance of those balls, but when you factor in the tendencies of the player the results can be substantial.  If a 10-15 yard gain won't have any affect on the average player's score, then you wouldn't mind if you had to give up 10-15 yards of distance off your drives and 5-7 off your irons, correct?  How would it affect your score if you had to tee off 25 yds  further back on every hole?  I'm guessing it would cost at least a couple of shots. Can @iacas shoot 75 with his wife's clubs?  Probably.  That doesn't mean that the equipment doesn't matter.  He would certainly need to make adjustments in his swing to hit them, which is hard to repeat precisely, so it would limit him from playing his best.  
  • TST Blog Entries

  • Blog Entries

  • Today's Birthdays

    1. Dragondrake
      Dragondrake
      (57 years old)
    2. Mistabigevil
      Mistabigevil
      (36 years old)
    3. Taylor56
      Taylor56
      (61 years old)
  • Get Great Gear with Amazon