Official NHA Assessment

Race 7: PAM GOLDING PROPERTIES ZIMBABWE DERBY (GRADE 3) (For 3-year-olds/ 3rd Leg Triple Crown)

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Line Horse
My Secret Place
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
8 / 9
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Coffeeberry          5    55.5    1    0.00     0.0   71    57           57    -14
2    Prince Of Kimberly   3    58.0    2    5.00     2.0   67    58           58    -9
3    Admirals Chance      5    58.0    3    8.50     0.0   72    62           62    -10
4    My Secret Place      5    56.5    4    9.00     0.0   59    59           59    +0
5    Walking Thru Time    3    55.5    5    14.00    2.0   64    53           54    -10
6    Onceajackpot         3    58.0    6    27.00    2.0   53    58           58    +5
7    Red Orchid           3    55.5    7    99.00    2.0   48    53           53    +5
8    Aratula              3    58.0    8    99.00    2.0   45    58           58    +13
99   Jacky Sparrow        3    55.5    99   0.00     2.0   -     53           53    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Coffeeberry 71 72 57 +15 0.0 -
2 Prince Of Kimberly 67 73 58 +15 2.0 -
3 Admirals Chance 72 77 62 +15 0.0 -
4 My Secret Place Line 59 71 59 +12 0.0
5 Walking Thru Time 64 73 54 +19 2.0 -
6 Onceajackpot 53 53 58 -5 2.0 -
7 Red Orchid 48 43 53 -10 2.0 -
8 Aratula 45 45 58 -13 2.0 -
99 Jacky Sparrow - 80 53 +27 2.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points