Official NHA Assessment

Race 9: WSB AVIATOR CLASS 4 (Open. Benchmark at 60.0kg = 82)

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Line Horse
Super Fast
Reference for assessment
Exact Matches
5 / 8
Calculated = Official
Close Matches
5 / 8
Within 2 points
Significant Diffs
1 / 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    Red Bomber           2    60.0    1    0.00     1.5   82    82           82    +0
2    Super Fast           5    59.0    2    0.50     0.0   83    83           83    +0
3    Mar Del Plata        2    56.5    3    2.50     1.5   75    75           75    +0
4    Mighty Zambezi       2    59.0    4    2.90     1.5   86    80           80    -6
5    Freedom Fighter      2    62.5    5    3.40     1.5   90    87           87    -3
6    Frostbite            3    56.5    6    8.30     2.5   78    73           73    -5
7    The Mask             2    61.0    7    9.80     1.5   84    84           84    +0
8    Charlie Croker       2    58.0    8    9.95     1.5   78    78           78    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Red Bomber 82 82 82 ✓ Match 1.5 -
2 Super Fast Line 83 83 83 ✓ Match 0.0
3 Mar Del Plata 75 75 75 ✓ Match 1.5 -
4 Mighty Zambezi 86 86 80 +6 1.5 -
5 Freedom Fighter 90 90 87 +3 1.5 -
6 Frostbite 78 78 73 +5 2.5 -
7 The Mask 84 84 84 ✓ Match 1.5 -
8 Charlie Croker 78 78 78 ✓ Match 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