Official NHA Assessment

Race 5: RaceCape Powered by Hollywoodbets CLASS 5 (Open. Benchmark at 60.0kg = 66)

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Line Horse
Unsolved Riddle
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 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    Augusta Blue         5    59.5    1    0.00     0.0   65    77           71    +6
2    Spirit's Unite       2    61.5    2    0.05     0.0   70    81           81    +11
3    Unsolved Riddle      3    58.0    3    0.80     8.0   62    62           62    +0
4    Champagne Mac        4    60.5    4    1.10     5.0   68    73           73    +5
5    Liketheclappers      3    58.5    5    3.35     8.0   63    60           60    -3
6    Gold Index           3    59.5    6    4.60     8.0   65    61           61    -4
7    Porto Zante          2    60.5    7    5.85     0.0   68    79           79    +11
8    Lord Nelson          3    58.5    8    8.10     8.0   63    59           59    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Augusta Blue 65 69 71 -2 0.0 -
2 Spirit's Unite 70 70 81 -11 0.0 -
3 Unsolved Riddle Line 62 77 62 +15 8.0
4 Champagne Mac 68 55 73 -18 5.0 -
5 Liketheclappers 63 63 60 +3 8.0 -
6 Gold Index 65 53 61 -8 8.0 -
7 Porto Zante 68 64 79 -15 0.0 -
8 Lord Nelson 63 55 59 -4 8.0 -
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