Official NHA Assessment

Race 8: Rising Sun DURBAN DASH (For 3 year-olds (Non-Black Type))

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Line Horse
Isivunguvungu
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 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    William Robertson    6    60.0    1    0.00     0.0   104   107          107   +3
2    Master Archie        3    60.0    2    3.90     2.0   125   103          115   -10
3    Isivunguvungu        3    60.0    3    4.20     2.0   103   103          103   +0
4    Barzalona            6    60.0    4    4.70     0.0   106   107          107   +1
5    Safe Return          3    60.0    5    5.00     2.0   107   103          103   -4
6    Intrepid             3    60.0    6    8.60     2.0   102   103          103   +1
7    Ambiorix             3    60.0    7    8.90     2.0   106   103          103   -3
8    Faustino             3    54.0    8    18.50    2.0   86    91           91    +5
99   Coin Spinner         3    58.0    99   0.00     2.0   -     99           99    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 William Robertson 104 124 107 +17 0.0 -
2 Master Archie 125 128 115 +13 2.0 -
3 Isivunguvungu Line 103 130 103 +27 2.0
4 Barzalona 106 66 107 -41 0.0 -
5 Safe Return 107 83 103 -20 2.0 -
6 Intrepid 102 73 103 -30 2.0 -
7 Ambiorix 106 98 103 -5 2.0 -
8 Faustino 86 82 91 -9 2.0 -
99 Coin Spinner - 101 99 +2 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