how does the usga calculate the slope of a golf course

by Dr. Benton Parisian 6 min read

A course that poses difficulty and leads to higher scores by bogey golfers will have a higher Slope Rating than a course that is less challenging. The USGA

United States Golf Association

The United States Golf Association is the United States' national association of golf courses, clubs and facilities and the governing body of golf for the U.S. and Mexico. Together with The R&A, the USGA produces and interprets the rules of golf. The USGA also provides a national handicap system f…

calculates Slope Rating with the following formula: bogey course rating minus Course Rating, with the result multiplied by 5.381 for men or 4.24 for women.

USGA Slope Rating
Slope ratings are calculated as a multiple of the difference between the expected good score for a bogey golfer (handicap in the range 20 to 24), called the bogey rating, and the expected good score for a scratch golfer (zero handicap), called the USGA Course Rating.

Full Answer

How does the USGA calculate slope rating?

The USGA calculates Slope Rating with the following formula: bogey course rating minus Course Rating, with the result multiplied by 5.381 for men or 4.24 for women. Lee Elder broke down racial barriers throughout his career and paved the way for others.

What is the average slope of a golf course?

The value is between 55 and 155, and the average standard slope number ranges from 113 to 120. The higher the slope number, the more difficult the golf course is for average golfers. USGA introduced the slope rating measurement in the 1980s as a system of fairness directed to bogey players.

How do you calculate a golf course rating?

Add or subtract the evaluation number from the par for the course. The Course Rating is a number with a single decimal. For example, if an extremely difficult par-72 golf course is a plus 3.0, the Course Rating would be 75.0. If an easy par-70 layout was rated a minus 2.0, the Course Rating would be 68.0.

What is a slope rating in golf handicaps?

If handicaps were simply estimates of golfers' average scores, then these two players would have the same handicap index. But Player A is clearly the better golfer, and in a match between the two Player B would clearly need some strokes. Slope rating allows the handicap index to reflect these factors.

How is the slope of a golf course determined?

Slope rating takes into account the USGA par rating of the course as well as the expected score of a higher handicap golfer. The difference between the two multiplied by 5.381 is the calculation used to determine the mens slope rating for a golf course.

What is USGA course slope?

To put it another way: USGA Course Rating tells the best golfers how hard a golf course actually plays; USGA Slope Rating indicates how much harder the course plays for "regular" (meaning not among the best) golfers.

How is handicap slope calculated?

Handicap differential = (Adjusted Gross Score-rating of the course) X 113 / Course slope ratings. The course rating is simply the scores of a new golfer on a normal course under a normal playing condition. Slope rating is the rating of 113 for a course based on the standard difficulty.

What determines slope rating?

Playing length and obstacles impact higher-handicap players more than lower-handicap players, and Slope Rating measures the relative difficulty of a golf course for players who are not scratch players compared to those who are scratch players. It is determined by comparing the Course Rating™ to the Bogey Rating™.

Is a 130 slope rating hard?

If you see a slope rating that falls anywhere in the double digits, you can expect that course to play rather easy, even for a bogey golfer. On the other hand, taking on a course with a slope rating in the 130's or 140's is going to present a serious challenge to a player with a mid or high handicap.

How does Course Rating and slope work?

The Course Rating is simply the average score compiled by the par golfers. In this case, it's 72. However, the Course Slope is not simply the average score compiled by the bogey golfers. The value for Course Slope is a measure of the amount of slant (or slope) in the straight line drawn between the two values.

How do I calculate my 2021 course handicap?

The Course Handicap formula: Handicap Index x (Slope Rating of Tees Played/113) + (Course Rating - par). For example, your Handicap Index is 16.7 and the tee box slope is 127, the course rating is 70.5 and par is 72.

How does the new golf handicap system work?

It is calculated from the best 8 scores from the last 20 rounds. As a new score is submitted, a player's Handicap Index will automatically update to use the 20 most recent scores. It will update overnight after the submission of an acceptable score and should be ready before you next play.

What is the average golf score for seniors?

The average score for someone over the age of 60 is 92 on a par 72 golf course. These people have a lot of time to play golf but they're getting older and their body doesn't work quite as well as it used to. Obviously, you'll have some golfers shoot much better and some that shoot much worse.

What is the average slope of a golf course?

The higher the slope number, the harder the course is for the bogey golfer relative to the difficulty of the course for the scratch golfer. Slope numbers can range anywhere between 55 and 155 with the average slope in the United States being 120.

What is the highest slope rating golf course?

KIAWAH ISLAND / S.C. / 7,356 YARDS / PAR 72 (Eight of our top 50 were created by the man they call the "Marquis de Sod.") The Ocean has the highest combination of Slope Rating (155) and Course Rating (79.6) in America, according to the U.S. Golf Association.

What is a difficult slope rating?

Slope merely tells you how “proportionately” more difficult that particular set of tees plays for the higher handicapped golfers as opposed to lower handicapped golfers. The more difficult the tees play proportionately for the higher handicappers, the greater the Slope rating that will be issued. That's it!

What is the average slope rating for golf courses?

The United States Golf Association established the average slope rating to 113, but it has later increased to about 120 as there aren’t many 18-hole golf courses with slope ratings set that low. As has been observed, most golf courses worldwide have average slope ratings of about 120.

What does slope number mean in golf?

Thus, the slope number converts a golfer’s handicap into a course handicap. In this way, it is made sure that a bogey golfer is allowed to play at an equal level to a scratch golfer, and it helps them obtain enough strokes from the same set of tees. This is the mathematical formula of how it is derived:

What is USGA rating?

What is USGA Golf Course Rating and Who Rates It? USGA Golf Course Rating is an assessment of the difficulty of a given golf course for scratch golfers. The course rating estimates the scratch golfers’ average scores who played on the golf course under the rating procedure.

How many strokes does a par 72 golf course have?

It is expressed in strokes, so an easy par-72 golf course could have a 68.9 course rating, while the more difficult one is likely to have a rating of 74.5. In other words, an average golfer should expect to play 68.9 strokes when the course playing difficulty is rated ‘easy,’ while on a challenging course, the same golfer is expected ...

When did the slope rating start?

USGA introduced the slope rating measurement in the 1980s as a system of fairness directed to bogey players. Namely, they observed that a bogey golfer is likely to increase the number of strokes considerably more when playing on a course with a higher level of difficulty than a scratch golfer. This led to creating a slope handicap system ...

Do golf courses affect the slope number?

Yes, they do. However, the course rating impacts the golfer’s index considerably more than the slope number. It often happens that players become too focused on the slope number while ignoring the golf course number.

Who determines the slope rating of a golf course?

The USGA evaluates many elements of a golf course to determine its Course Rating. Course and slope ratings are calculated by the United States Golf Association. In fact, the USGA trademarks and licenses its USGA Course Rating and USGA Course Slope Rating to the Royal Canadian Golf Association -- countries other than America ...

How many yards does a scratch golfer hit?

A typical scratch golfer, as defined by the USGA, hits 250-yard drives and can reach a 470-yard hole in two strokes. A typical female scratch golfer hits drives 210 yards and can reach a 400-yard hole in two strokes.

What is a course rating?

A Course Rating measures the difficulty of a golf course and is a crucial component in determining a player's handicap. The Slope Rating measures the difficulty of a golf course for a bogey golfer. The Course Rating and the Slope Rating typically are printed on the scorecard for a golf course.

How many yards should a golf course be in front of a teeing area?

The front of a teeing area, as defined in the Rules of Golf, should not be placed more than 10 yards (10 metres) in front of, or behind, the relevant permanent distance marker on each hole. Overall, the golf course should not be shortened (or lengthened) ...

What are the obstacles in golf?

These are: topography; fairway; green target; recoverability and rough; bunkers; crossing obstacles; lateral obstacles; trees; green surface and psychology.

When must a golf club notify the Authorized Association of changes to the course?

A golf club must notify the Authorized Association when permanent changes are made to a golf course. Permanent changes to the golf course require the Authorized Association to review the current Course Rating and Slope Rating and to determine whether a re-rating is necessary.

What is Slope Rating?

Slope Rating is described by the USGA as demonstrating the “measurement of the relative playing difficulty of a course for players who are not scratch golfers, compared to scratch golfers”. The higher a course’s Slope Rating, the higher the expected difference of scoring between a scratch golfer and a bogey golfer.

How is Slope Rating Calculated?

To determine the Slope Rating for a course requires two key numbers – Course Rating and Bogey Rating. The Course Rating is the evaluation of the playing difficulty of a golf course for the scratch player (0 handicap.) The Bogey Rating is the evaluation of the difficulty of a course for a bogey player of 20-24 handicap.

What Does a Slope of 113 Mean?

113 is the average Slope Rating signifying a course of standard relative difficulty. The number 113 is used in calculating a player’s Course Handicap. Each player with a WHS Handicap Index can calculate their Course Handicap for any course by dividing the Slope Rating of that course by 113 and multiplying that number by their Handicap Index.

What is slope rating in golf?

Slope rating (a term trademarked by the United States Golf Association) is a measurement of the difficulty of a golf course for bogey golfers relative to the course rating.

What is the role of slope in golf?

The most important role of a slope is leveling the playing field for players of different skill levels. For example, let's say Player A and Player B average 85 strokes each for 18 holes. But Player A's average is established on a very difficult course (say, a slope rating of 150), while Player B's average is established on a much easier course (say, a slope rating of 105). If handicaps were simply estimates of golfers' average scores, then these two players would have the same handicap index. But Player A is clearly the better golfer, and in a match between the two Player B would clearly need some strokes.

What does USGA course rating mean?

To put it another way: USGA Course Rating tells the best golfers how hard a golf course actually plays; USGA Slope Rating indicates how much harder the course plays for "regular" (meaning not among the best) golfers.

What is the minimum slope rating for 18 holes?

The minimum slope rating is 55 and the maximum is 155 (slope does not relate specifically to strokes played as course rating does). When the slope rating system was first put into effect, the USGA set the slope for an "average" golf course at 113; however, not many 18-hole golf courses have slope ratings that low.

Why is the handicap index lower for A and B?

Because he plays on a course with a higher slope rating, Player A's handicap index will be lower than Player B's (when it is calculated using the slope ratings), despite the fact that they both average scores of 85. So when A and B get together to play, B will get those extra strokes he needs.

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