Official NHA Assessment

Race 5: 4RACING.TV MAIDEN PLATE (For all Maidens)

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Line Horse
Rishaan's Boy
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
6 / 9
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    Stolen Thunder       3    60.0    1    0.00     2.0   61    56           56    -5
2    Michelin Star        3    60.0    2    1.75     2.0   68    59           59    -9
3    Ships At Sea         2    56.0    3    3.50     0.0   -     53           53    +53
4    Rishaan's Boy        3    60.0    4    4.50     2.0   56    56           56    +0
5    Poldark              3    58.5    5    6.50     2.0   -     53           53    +53
6    Choice Assorted      3    60.0    6    8.00     2.0   52    56           56    +4
7    Royal Tiger          5    60.0    7    9.50     0.0   45    60           60    +15
8    Forttuva             3    60.0    8    99.99    2.0   -     56           56    +56
99   The First Viceroy    4    60.0    99   0.00     0.5   -     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 Stolen Thunder 61 69 56 +13 2.0 -
2 Michelin Star 68 68 59 +9 2.0 -
3 Ships At Sea - 54 53 +1 0.0 -
4 Rishaan's Boy Line 56 42 56 -14 2.0
5 Poldark - 54 53 +1 2.0 -
6 Choice Assorted 52 59 56 +3 2.0 -
7 Royal Tiger 45 44 60 -16 0.0 -
8 Forttuva - - 56 -56 2.0 -
99 The First Viceroy - - 59 -59 0.5 -
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