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GHIN handicap for shooting -100 at torrey pines


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Posted
If I signed up for GHIN and then played Torrey Pines twenty days in open conditions and entered over twenty scores of 90 to 99 in GHIN what would my handicap be calculated to be?

Posted
You'd have to find out what the course rating and slope rating would be for Open conditions first before being able to answer that.
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Posted
The south course at Torrey Pines is rated 78.1/143 from the tips (~7600 yards). If your best 10 scores averaged about 93, your handicap would be an 11.0.

(93 - 78.1) x (113 / 147) x 0.96 = 11.0

Of course, this doesn't take into account the U.S. Open setup, but I don't think they publish a rating and slope for that. If, hypothetically, the Open setup increased the slope rating to 165, your handicap would be 9.8.

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  • Administrator
Posted
The south course at Torrey Pines is rated 78.1/143 from the tips (~7600 yards). If your best 10 scores averaged about 93, your handicap would be an 11.0.

155 is the stated maximum, but there's basically an infinite amount of room to move in the course rating portion of the equation.

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Posted
The south course at Torrey Pines is rated 78.1/143 from the tips (~7600 yards). If your best 10 scores averaged about 93, your handicap would be an 11.0.

I believe you are missing a set of parenthesis:

(((93 - 78.1) x 113) / 147) x 0.96 = 10.9 GHIN states that you drop the decimal...not round up/down Math gurus...correct me if I'm wrong with the above (as I may very well be!)
underparnv

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  • Administrator
Posted
(93 - 78.1) x (113 / 147) x 0.96 = 11.0

(((93 - 78.1) x 113) / 147) x 0.96 = 10.9

Same thing. You only differ on what you've done with the decimals. beisen rounded, you didn't (properly).

I believe you are missing a set of parenthesis:

You're multiplying and dividing. It doesn't matter what order you do it in, really, so long as you get the subtraction done first (and don't multiply 0.96 by a divisor, as in (147 * 0.96). Multiplication and division are commutative.

X * (113/147) = (X * 113)/147 = (X/147) * 113. All the same. Again, you two just differed on the decimal/rounding.

Erik J. Barzeski —  I knock a ball. It goes in a gopher hole. 🏌🏼‍♂️
Director of Instruction Golf Evolution • Owner, The Sand Trap .com • AuthorLowest Score Wins
Golf Digest "Best Young Teachers in America" 2016-17 & "Best in State" 2017-20 • WNY Section PGA Teacher of the Year 2019 :edel: :true_linkswear:

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Posted
Same thing. You only differ on what you've done with the decimals. beisen rounded, you didn't (properly).

Got ya...thanks for the clarification.

underparnv

That's how I like my golf. A kick in the face. -Ben

Driver: 983E 8.5* w/ stock stiff flex shaftIrons: MP60 - 2 through 9 irons (swap out the 2 iron for my three wood at some courses)Wedges: 588 Chrome - 47* Pitching Wedge, 53* Gap Wedge, 56* Sand Wedge MP-T Black Ni - 60* Lob WedgePutter:.....

  • 3 weeks later...
Posted
GHIN states that you drop the decimal...not round up/down

Didn't know that. My bad. Thanks.

Brad Eisenhauer

In my bag:
Driver: Callaway Hyper X 10° | Fairway Wood: GigaGolf PowerMax GX920 3W (15°) | Hybrid: GigaGolf PowerMax GX920 3 (20°)
Irons: Mizuno MX-25 4-PW | Wedges: GigaGolf Tradition SGS Black 52°, 56°, 60° | Putter: GigaGolf CenterCut Classic SP3

Ball: Titleist ProV1x or Bridgestone B330S


Posted
B.I.M.D.A.S. Brackets indicies multiplication addition subtraction

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Posted
...Multiplication and division are commutative...

Actually division is not commutative:

10/2= 5 2/10= .2

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Posted
B.I.M.D.A.S. Brackets indicies multiplication addition subtraction

michael - in the US: PEMDAS Parentheses, exponents, multiplication division addition subtraction

Also, if division is done as multiplying by the inverse, it is commutative. e.g. 10/2 = 10 * 1/2 = 1/2 * 10

Golfunit

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  • Administrator
Posted
Also, if division is done as multiplying by the inverse, it is commutative.

Right. Since all you're doing in this is dividing and multiplying, it's commutative in this situation.

Could have been more clear.

Erik J. Barzeski —  I knock a ball. It goes in a gopher hole. 🏌🏼‍♂️
Director of Instruction Golf Evolution • Owner, The Sand Trap .com • AuthorLowest Score Wins
Golf Digest "Best Young Teachers in America" 2016-17 & "Best in State" 2017-20 • WNY Section PGA Teacher of the Year 2019 :edel: :true_linkswear:

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    • (Article appeared in the March 15, 2026 edition of the St. Louis Post-Dispatch, p. 1) Dense fog covers the closed driving range at Ruth Park Golf Course in University City on Feb. 19, 2026. After University City attempted to use leftover dirt from Market at Olive building project to improve the driving range, complications arose and closed the range. ‘Free dirt’ proves costly for Ruth Park driving range By Nassim Benchaabane | Post-Dispatch // Photos by Liz Rymarev UNIVERSITY CITY — The dirt was supposed to be a gift. Developers hoping to bring a Target store to Olive Boulevard needed a place to dump thousands of truckloads of excavated dirt. University City offered to take the dirt at its popular golf course's driving range, in hopes it would fix long-standing erosion and stormwater runoff problems. The project was supposed to take three months.  The driving range at Ruth Park is still closed today. It's in worse condition than before. And it's on track to cost University City nearly $900,000 in lost revenue and future repairs. “The ‘free dirt’ and golf course improvements turned out to be not so free,” Darin Girdler, the city's parks director at the time, wrote in an internal memo in August. Records show the project was launched without a contract between the developer and the city, with no written plan for finishing the range after the dirt was dumped and graded, and without clear terms spelling out consequences if the job wasn't done correctly. Instead, city emails show, as the dirt sat there for months, and the erosion and runoff issues got worse, neither developers nor city officials took charge and solved the problems. University City did not make anyone available for an interview to explain how things went wrong. Former city manager Gregory Rose, Target developer Larry Chapman and excavation company Kolb Grading did not respond to requests for comment. Golfers and residents, meanwhile, have grown frustrated. 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