Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE ()

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Line Horse
Sombreuil
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
7 / 10
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    Champagne Problems   2    57.5    1    0.00     3.5   66    70           70    +4
2    Sombreuil            2    57.5    2    3.25     3.5   70    70           70    +0
3    Timeline             3    57.5    3    4.00     5.0   64    67           67    +3
4    Am Still Winning     3    57.5    4    6.25     5.0   59    67           67    +8
5    Endizayo             3    57.5    5    6.35     5.0   61    67           67    +6
6    Mme Huntress         3    57.5    6    7.35     5.0   77    67           67    -10
7    World Choice         2    56.0    7    8.10     3.5   54    67           67    +13
8    Quick Crown          2    56.0    8    8.35     3.5   65    67           67    +2
99   Star Trooper         3    60.0    99   0.00     5.0   -     72           72    +0
99   Stormin Attack       3    53.5    99   0.00     5.0   -     59           59    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Champagne Problems 66 68 70 -2 3.5 -
2 Sombreuil Line 70 70 70 ✓ Match 3.5
3 Timeline 64 53 67 -14 5.0 -
4 Am Still Winning 59 51 67 -16 5.0 -
5 Endizayo 61 56 67 -11 5.0 -
6 Mme Huntress 77 61 67 -6 5.0 -
7 World Choice 54 74 67 +7 3.5 -
8 Quick Crown 65 65 67 -2 3.5 -
99 Star Trooper - 51 72 -21 5.0 -
99 Stormin Attack - 46 59 -13 5.0 -
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