Official NHA Assessment

Race 5: CLASSIC DAY 7 MARCH MAIDEN PLATE (For all Maidens)

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Line Horse
Heroic Act
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
5 / 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    Royal Engagement     3    60.0    1    0.00     5.0   77    58           58    -19
2    Heroic Act           3    60.0    2    1.60     5.0   63    63           63    +0
3    Vixeninthevineyard   2    56.5    3    3.30     0.0   66    64           64    -2
4    Inclusion            3    60.0    4    3.40     5.0   68    61           61    -7
5    Thoonsil             3    60.0    5    3.50     5.0   73    61           63    -10
6    Musical Warfare      3    60.0    6    99.99    5.0   -     58           58    +58
7    Elusive Charm        2    60.0    7    99.99    0.0   62    68           68    +6
8    War Talk             2    56.5    8    99.99    0.0   76    61           66    -10
99   Emerald City         2    60.0    99   0.00     0.0   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Royal Engagement 77 80 58 +22 5.0 -
2 Heroic Act Line 63 65 63 +2 5.0
3 Vixeninthevineyard 66 64 64 ✓ Match 0.0 -
4 Inclusion 68 65 61 +4 5.0 -
5 Thoonsil 73 77 63 +14 5.0 -
6 Musical Warfare - 30 58 -28 5.0 -
7 Elusive Charm 62 62 68 -6 0.0 -
8 War Talk 76 76 66 +10 0.0 -
99 Emerald City - 71 68 +3 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