Official NHA Assessment

Race 3: OPEN A TABGOLD ACCOUNT - 031 314 1874 D STAKES (For All Horses with a nett rating of 69 & below)

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Line Horse
Mac Hardy
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
5 / 8
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    Global Impact        2    64.0    1    0.00     0.0   68    66           66    -2
2    Mac Hardy            4    60.0    2    1.80     0.5   60    60           60    +0
3    Victor Rail          5    58.5    3    3.20     0.0   57    57           57    +0
4    L'Ultimo             2    56.0    4    3.50     0.0   60    51           51    -9
5    Forest Jump          8    57.5    5    3.80     0.0   64    54           54    -10
6    Porfirio             6    64.0    6    4.90     0.0   67    66           66    -1
7    Gorgeous Dude        4    57.0    7    6.00     0.5   54    51           51    -3
8    Force De Dieu        3    61.5    8    22.60    1.5   64    58           58    -6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Global Impact 68 74 66 +8 0.0 -
2 Mac Hardy Line 60 64 60 +4 0.5
3 Victor Rail 57 61 57 +4 0.0 -
4 L'Ultimo 60 61 51 +10 0.0 -
5 Forest Jump 64 62 54 +8 0.0 -
6 Porfirio 67 88 66 +22 0.0 -
7 Gorgeous Dude 54 55 51 +4 0.5 -
8 Force De Dieu 64 64 58 +6 1.5 -
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