Official NHA Assessment

Race 2: CHESHIRE HOMES CHATSWORTH MAIDEN PLATE (For all Maidens)

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Line Horse
Catavar
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
6 / 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    Barry Du Grond       3    59.0    1    0.00     8.5   79    66           66    -13
2    Star Of The Future   3    60.0    2    2.80     8.5   -     68           68    +68
3    Catavar              4    60.0    3    3.05     10.0  65    65           65    +0
4    Dorset               3    57.5    4    4.45     8.5   -     63           63    +63
5    Master Du Rouvray    2    59.0    5    4.75     5.5   -     72           72    +72
6    Chili Bomb           3    59.0    6    5.95     8.5   80    66           70    -10
7    Mr Fixit             3    59.0    7    8.05     8.5   -     66           66    +66
8    Little Cracker       3    59.0    8    8.55     8.5   -     66           66    +66
9    Grand Force          3    59.0    9    11.15    8.5   -     66           66    +66
10   Gustav Klimt         3    59.0    10   13.45    8.5   -     66           66    +66
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Barry Du Grond 79 67 66 +1 8.5 -
2 Star Of The Future - 78 68 +10 8.5 -
3 Catavar Line 65 64 65 -1 10.0
4 Dorset - 66 63 +3 8.5 -
5 Master Du Rouvray - 81 72 +9 5.5 -
6 Chili Bomb 80 76 70 +6 8.5 -
7 Mr Fixit - 79 66 +13 8.5 -
8 Little Cracker - 61 66 -5 8.5 -
9 Grand Force - 54 66 -12 8.5 -
10 Gustav Klimt - 50 66 -16 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