Official NHA Assessment

Race 1: ONE DOLLAR DEALS MAIDEN PLATE (Maiden Plate Colts & Geldings to carry)

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Line Horse
Evocative
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
6 / 7
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    My Secret Place      5    57.0    1    0.00     0.0   48    53           53    +5
2    Evocative            3    57.0    2    0.10     1.5   50    50           50    +0
3    Red Orchid           3    57.0    3    0.60     1.5   -     55           55    +55
4    Apache Gold          3    60.0    4    1.10     1.5   48    60           60    +12
5    Countess Lydia       3    57.0    5    4.60     1.5   -     50           50    +50
6    Aratula              3    60.0    6    4.70     1.5   47    56           56    +9
7    Onceajackpot         3    60.0    7    7.20     1.5   33    56           56    +23
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 My Secret Place 48 71 53 +18 0.0 -
2 Evocative Line 50 44 50 -6 1.5
3 Red Orchid - 43 55 -12 1.5 -
4 Apache Gold 48 52 60 -8 1.5 -
5 Countess Lydia - 41 50 -9 1.5 -
6 Aratula 47 45 56 -11 1.5 -
7 Onceajackpot 33 53 56 -3 1.5 -
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