2023 Change to PCC (Playing Conditions Calculation)

[bkuehn1952]

I looked at my 2022 record. With 63 scores posted, 4 had a PCC adjustment. One was -1, two +1 and one +3 (yes, it was a tough day and the entire field struggled).

I believe the USGA would like to see more PCC-adjusted scores, so they have altered the algorithm used to calculate PCC. In 2022 the PCC had virtually no influence on my index. I will be interested in whether there are more PCC adjustments in 2023. Of course, I am just a single data point, so my experience has limited credibility.

[iacas]

Yeah, it changed mid-2022.

World Handicap System: The controversial Playing Conditions Calculation has been changed

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One of the most maligned parts of the World Handicap System has been altered. Steve Carroll has the details

Quote

The R&A and USGA have told national handicapping associations that detailed analysis of scoring data submitted by countries indicates that a change to the rounding method currently used to work out the PCC would increase the number of times an adjustment is made for abnormal conditions by an average of 5%.

They have said this means that, for example, in countries where a PCC adjustment happens about 10% of the time, it would increase the average to about 15% on eligible days.

[billchao]

A third of my rounds (4 out of 12) at what I consider to be my home course this year have had -1 adjustments. I’m not sure what that means, but I found it interesting.

[Carl3]

One round out of 19 so far in 2025. Zero rounds out of 31 in 2024 adjusted for me. In the article Erik referenced there was a quote 

"While the PCC will remain a “black box calculation”, which clubs won’t be able to see, chiefs believe its impact – even though it may seem a small change on the surface – could still be significant."

It would be great if the author gave a hint as to the calculation and the change to the algorithm.

From AI:

 

The Playing Conditions Calculation (PCC) is an automatic statistical adjustment in the World Handicap System that accounts for unusual playing conditions on a given day. It determines if scores were significantly higher or lower than expected due to factors like weather or course setup, and adjusts score differentials accordingly. A PCC adjustment can range from -1 to +3, with a negative value indicating the course played easier than expected and a positive value indicating it played harder. 

 

Here's a more detailed explanation:

• Purpose:

  The PCC ensures that a player's Handicap Index reflects their demonstrated ability, regardless of the conditions they play in. 

   
• How it works:

  • The system compares actual scores submitted on a given day against expected scores based on players' Handicap Indices. 
     
  • If a significant number of scores are consistently higher or lower than expected, an adjustment is made. 
     
  • This adjustment is applied to the score differentials of all players who played on that course that day. 
     
• When it applies:

  • At least eight acceptable scores must be submitted for the PCC to be calculated. 
     
  • The PCC is primarily determined by the scores of players with a Handicap Index of 36.0 or below. 
     
• Adjustment range:

  The PCC adjustment can be -1, 0, +1, +2, or +3. 

   

  • A negative adjustment means the course played easier than expected. 
     
  • A positive adjustment means the course played harder than expected. 
     
  • A PCC of 0 means the course played as expected. 
     
• Impact on Handicap Index:

  The PCC adjustment is applied to the score differential calculation, which ultimately affects the Handicap Index. 

Edited July 18 by Carl3

[jsgolfer]

I have 58 Scores posted this year and have only had PCC applied to 4 of them, 2 at my home course (+1, -1) and 2 away (+1, +2).  

Hasn't hurt or helped my handicap, as far as I can tell,

[billchao]

I got -1 on both rounds this past weekend, one at the home course and one of the other ones in the county. Neither day felt like abnormal conditions for better scoring and I didn't play well on either day. I'm starting to feel like the courses aren't rate properly.