Official NHA Assessment

Race 6: SECRETARIAT STAKES (Listed) (For 3 year-olds)

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Line Horse
Star Coin
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
8 / 11
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    Jimmy Don            2    59.0    1    0.00     0.0   97    96           96    -1
2    Arividicio           5    57.0    2    2.00     0.0   93    95           95    +2
3    The Mauritian        3    52.5    3    3.00     5.0   84    75           75    -9
4    Star Coin            5    56.5    4    3.75     0.0   92    92           92    +0
5    Raffles              2    60.0    5    4.00     0.0   99    99           99    +0
6    Fostinovo            3    54.0    6    4.10     5.0   87    77           77    -10
7    Tamarisk Tree        5    56.5    7    4.75     0.0   92    91           91    -1
8    Kentallen Bay        2    56.5    8    8.00     0.0   92    91           91    -1
9    Acorn                2    53.0    9    9.50     0.0   85    84           84    -1
10   Samthewiseman        5    52.5    10   12.00    0.0   74    83           83    +9
99   Meridius             2    57.5    99   0.00     0.0   -     93           93    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Jimmy Don 97 112 96 +16 0.0 -
2 Arividicio 93 50 95 -45 0.0 -
3 The Mauritian 84 100 75 +25 5.0 -
4 Star Coin Line 92 78 92 -14 0.0
5 Raffles 99 105 99 +6 0.0 -
6 Fostinovo 87 80 77 +3 5.0 -
7 Tamarisk Tree 92 105 91 +14 0.0 -
8 Kentallen Bay 92 90 91 -1 0.0 -
9 Acorn 85 89 84 +5 0.0 -
10 Samthewiseman 74 52 83 -31 0.0 -
99 Meridius - 115 93 +22 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