Official NHA Assessment

Race 1: MICHEL NAIRAC APPRECIATION STAKES DARLEY ARABIAN (Listed) (Open)

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Line Horse
Winter Games
Reference for assessment
Exact Matches
1 / 15
Calculated = Official
Close Matches
9 / 15
Within 2 points
Significant Diffs
2 / 15
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    I Salute You         3    55.5    1    0.00     1.0   103   97           97    -6
2    Winter Games         4    54.0    2    1.40     0.5   98    98           98    +0
3    Hat's Pride          2    52.0    3    1.70     0.0   91    95           95    +4
4    Money Heist          2    57.0    4    1.90     0.0   104   105          105   +1
5    Sundance Kid         5    52.0    5    3.00     0.0   91    94           94    +3
6    Guy Gibson           2    55.5    6    3.80     0.0   101   100          100   -1
7    Narina Trogon        5    58.0    7    4.50     0.0   106   104          104   -2
8    The Africa House     4    52.0    8    4.80     0.5   90    91           91    +1
9    Teflon Man           4    57.0    9    6.00     0.5   104   101          101   -3
10   Cherry Ano           5    59.5    10   7.10     0.0   109   107          107   -2
11   Imilenzeyokududuma   6    62.0    11   7.15     0.0   114   112          112   -2
12   Busstopinhounslow    3    58.5    12   7.85     1.0   109   103          103   -6
13   Diani                5    56.5    13   9.35     0.0   103   101          101   -2
14   Down To Business     2    56.0    14   10.15    0.0   101   100          100   -1
99   Ikigai               8    52.0    99   0.00     0.0   -     92           92    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 I Salute You 103 112 97 +15 1.0 -
2 Winter Games Line 98 103 98 +5 0.5
3 Hat's Pride 91 97 95 +2 0.0 -
4 Money Heist 104 106 105 +1 0.0 -
5 Sundance Kid 91 96 94 +2 0.0 -
6 Guy Gibson 101 99 100 -1 0.0 -
7 Narina Trogon 106 102 104 -2 0.0 -
8 The Africa House 90 93 91 +2 0.5 -
9 Teflon Man 104 106 101 +5 0.5 -
10 Cherry Ano 109 108 107 +1 0.0 -
11 Imilenzeyokududuma 114 109 112 -3 0.0 -
12 Busstopinhounslow 109 110 103 +7 1.0 -
13 Diani 103 96 101 -5 0.0 -
14 Down To Business 101 100 100 ✓ Match 0.0 -
99 Ikigai - 91 92 -1 0.0 -
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