Official NHA Assessment

Race 4: CITIZEN MAIDEN PLATE (A) (For all Maidens)

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Line Horse
Secret Chord
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
9 / 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    Sea Shanty           4    60.0    1    0.00     4.0   74    78           70    -4
2    Quick Trip           2    57.5    2    0.30     2.5   78    76           76    -2
3    So Seductive         2    57.5    3    1.00     2.5   85    76           76    -9
4    Secret Chord         4    60.0    4    3.00     4.0   78    78           78    +0
5    Trip To States       5    60.0    5    7.75     0.0   63    86           86    +23
6    Sacambaya            2    60.0    6    9.00     2.5   77    81           81    +4
7    Knockemstiff         2    60.0    7    12.75    2.5   71    81           81    +10
8    Winter In Africa     3    57.5    8    16.75    3.5   -     74           74    +74
9    Captain Jim          3    60.0    9    18.00    3.5   -     79           79    +79
10   Douglas Dragon       3    60.0    10   19.00    3.5   -     79           79    +79
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sea Shanty 74 71 70 +1 4.0 -
2 Quick Trip 78 82 76 +6 2.5 -
3 So Seductive 85 89 76 +13 2.5 -
4 Secret Chord Line 78 92 78 +14 4.0
5 Trip To States 63 63 86 -23 0.0 -
6 Sacambaya 77 72 81 -9 2.5 -
7 Knockemstiff 71 65 81 -16 2.5 -
8 Winter In Africa - - 74 -74 3.5 -
9 Captain Jim - 54 79 -25 3.5 -
10 Douglas Dragon - 89 79 +10 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