Official NHA Assessment

Race 4: CHAMPION SPRINTER SURJAY & CHAMPION MILER CHARLES DICKENS MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
National Disgrace
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 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    Festival Chic        2    57.0    1    0.00     0.0   -     59           6     +6
2    National Disgrace    2    60.0    2    1.25     0.0   69    69           69    +0
3    Little Suzie         3    57.0    3    5.50     8.5   -     42           42    +42
4    Forgotten Song       2    57.0    4    7.50     0.0   -     59           59    +59
5    Pretty Precious      3    60.0    5    8.25     8.5   75    48           65    -10
6    Kortvandraad         3    57.0    6    12.75    8.5   -     42           42    +42
7    White Waters         2    57.0    7    13.05    0.0   78    59           68    -10
8    Genteel              3    57.0    8    20.30    8.5   -     42           42    +42
9    As The Eagle Flies   2    57.0    9    22.80    0.0   -     59           59    +59
99   Golden Angel         3    57.0    99   0.00     8.5   -     42           42    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Festival Chic - 96 6 +90 0.0 -
2 National Disgrace Line 69 69 69 ✓ Match 0.0
3 Little Suzie - 108 42 +66 8.5 -
4 Forgotten Song - 78 59 +19 0.0 -
5 Pretty Precious 75 72 65 +7 8.5 -
6 Kortvandraad - 71 42 +29 8.5 -
7 White Waters 78 73 68 +5 0.0 -
8 Genteel - 68 42 +26 8.5 -
9 As The Eagle Flies - 67 59 +8 0.0 -
99 Golden Angel - 72 42 +30 8.5 -
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