WHS Course/Playing Handicap Calculations

Introduction

For these examples, I am going to use an Example Championship Course from the Back Tees

Terms and Values Used in the Examples

• Par = 71
• (CR) Course Rating = 75.1
• (SR) Slope Rating = 132
• (AGS) Adjusted Gross Score = 85
• (PCC) Playing Conditions Calculation = 0
• Our Example player has a Handicap Index of 11.4

England, Wales and Ireland

Course Handicap = HI * (SR / 113)

• 11.4 * (132 / 113) = 13.3168141592
• Rounded to 13

Playing Handicap for Medal - Stableford - Par/Bogey = CH * Competition Allowance

• 13 * 0.95 = 12.35
• Rounded to 12

Score Differential = (113/SR) * (AGS - CR - PCC)

• (113 / 132) * (85 - 75.1 - 0) = 8.5
  
• Score Diff is rounded to 1 decimal place

Scotland

Course Handicap = HI * (SR / 113)

• 11.4 * (132 / 113) = 13.3168141592
• DO NOT ROUND

Playing Handicap for Medal - Stableford - Par/Bogey = CH * Competition Allowance

• 13.3168141592 * 0.95 = 12.6509734512
• Rounded to 13

Score Differential = (113/SR) * (AGS - CR - PCC)

• (113 / 132) * (85 - 75.1 - 0) = 8.5
  
• Score Diff is rounded to 1 decimal place

Rest of the World (USGA)

Course Handicap = HI * (SR / 113) + (CR - PAR)

• 11.4 * (132 / 113) + (75.1 - 71) = 17.4168141592
• DO NOT ROUND

Playing Handicap for Medal - Stableford - Par/Bogey = CH * Competition Allowance

• 17.4168141592 * 0.95 = 16.5459734512
• Rounded to 17

Score Differential = (113/SR) * (AGS - CR - PCC)

• (113 / 132) * (85 - 75.1 - 0) = 8.5
  
• Score Diff is rounded to 1 decimal place

One WHS for the whole world???

Note that in the examples shown

• In England, Wales and Ireland the playing handicap is 12
• In Scotland, the playing handicap is 13
• In the Rest of the World (USGA) the playing handicap is 17

So how is the same for everybody??

• The Score Differential is consistent and everybody has a Score Diff of 8.5