Official NHA Assessment

Race 1: #THISISRACING WELCOMES YOU MAIDEN PLATE (For all Maidens)

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Line Horse
Thermopylae
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 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    The Chosen One       2    57.0    1    0.00     0.0   -     67           6     +6
2    Thermopylae          2    57.0    2    0.40     0.0   72    72           72    +0
3    Gimme A Diamond      2    57.0    3    2.20     0.0   -     70           70    +70
4    Steel Clad           4    60.0    4    4.70     6.0   -     61           61    +61
5    The Merciful         5    57.0    5    5.00     0.0   57    67           67    +10
6    Black Lightning      2    57.0    6    11.00    0.0   -     67           67    +67
7    Duke Of Fire         4    56.0    7    17.50    6.0   42    53           53    +11
99   Ignatius             2    57.0    99   0.00     0.0   -     67           67    +0
99   Hearts Thunder       4    60.0    99   0.00     6.0   -     61           61    +0
99   Greenlightforgo      3    60.0    99   0.00     8.5   -     56           56    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Chosen One - 52 6 +46 0.0 -
2 Thermopylae Line 72 54 72 -18 0.0
3 Gimme A Diamond - 54 70 -16 0.0 -
4 Steel Clad - - 61 -61 6.0 -
5 The Merciful 57 54 67 -13 0.0 -
6 Black Lightning - 64 67 -3 0.0 -
7 Duke Of Fire 42 38 53 -15 6.0 -
99 Ignatius - 70 67 +3 0.0 -
99 Hearts Thunder - 66 61 +5 6.0 -
99 Greenlightforgo - 49 56 -7 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