Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN HANDICAP (For Maidens with 3 or more runs)

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Line Horse
Empress Wu
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 8
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    Shimmering           2    54.5    1    0.00     0.5   76    64           76    +0
2    Trail Runner         3    60.0    2    0.70     1.5   73    73           73    +0
3    Empress Wu           3    57.5    3    3.20     1.5   68    68           68    +0
4    Fire Starter         2    58.0    4    5.20     0.5   83    71           73    -10
5    Touch Of Heaven      3    54.5    5    10.20    1.5   62    62           62    +0
6    Superior             3    52.0    6    11.60    1.5   47    57           57    +10
7    Solamente            3    52.0    7    14.60    1.5   35    57           57    +22
99   Dragonheart          2    52.0    99   0.00     0.5   -     59           59    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Shimmering 76 74 76 -2 0.5 -
2 Trail Runner 73 75 73 +2 1.5 -
3 Empress Wu Line 68 61 68 -7 1.5
4 Fire Starter 83 80 73 +7 0.5 -
5 Touch Of Heaven 62 57 62 -5 1.5 -
6 Superior 47 47 57 -10 1.5 -
7 Solamente 35 30 57 -27 1.5 -
99 Dragonheart - 46 59 -13 0.5 -
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