Official NHA Assessment

Race 4: RACEHORSE OWNERS ASSOCIATION MAIDEN PLATE (For all Maidens)

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Line Horse
Black Burner
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
8 / 13
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    Black Burner         3    60.0    1    0.00     3.5   65    65           65    +0
2    Double Magic         3    60.0    2    0.10     3.5   -     65           65    +65
3    Earl of Cardigan     3    60.0    3    0.25     3.5   66    65           65    -1
4    Gone In Time         3    60.0    4    1.25     3.5   68    65           65    -3
5    Fulliautomatix       3    60.0    5    3.75     3.5   70    65           65    -5
6    Covert Operator      6    60.0    6    4.00     0.0   72    72           72    +0
7    Great Times          3    60.0    7    5.50     3.5   64    65           65    +1
8    Final Declaration    3    60.0    8    6.00     3.5   64    65           65    +1
9    Equerry              3    58.5    9    7.25     3.5   36    62           62    +26
10   Maradiva             3    60.0    10   9.50     3.5   74    65           65    -9
11   Brave Sioux          3    60.0    11   11.75    3.5   -     65           65    +65
12   Floreana Island      3    57.5    12   12.25    3.5   72    60           62    -10
99   Captain Freedom      3    57.5    99   0.00     3.5   -     60           60    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Black Burner Line 65 60 65 -5 3.5
2 Double Magic - 72 65 +7 3.5 -
3 Earl of Cardigan 66 50 65 -15 3.5 -
4 Gone In Time 68 54 65 -11 3.5 -
5 Fulliautomatix 70 66 65 +1 3.5 -
6 Covert Operator 72 77 72 +5 0.0 -
7 Great Times 64 54 65 -11 3.5 -
8 Final Declaration 64 60 65 -5 3.5 -
9 Equerry 36 50 62 -12 3.5 -
10 Maradiva 74 54 65 -11 3.5 -
11 Brave Sioux - 72 65 +7 3.5 -
12 Floreana Island 72 66 62 +4 3.5 -
99 Captain Freedom - 54 60 -6 3.5 -
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