Official NHA Assessment

Race 4: 4RACING.TV MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 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    Daisy Buchanan       2    57.0    1    0.00     1.0   -     -            -     +0
2    Rose Velvet          2    57.0    2    2.25     1.0   -     -            -     +0
3    Second Breath        2    57.0    3    2.85     1.0   -     -            -     +0
4    Outlaw               2    57.0    4    3.45     1.0   -     -            -     +0
5    Mandalay             3    56.0    5    3.50     2.0   67    -            63    -4
6    Arrow Sky            4    60.0    6    5.70     2.5   -     -            -     +0
7    Walala Wasala        3    60.0    7    6.80     2.0   62    -            56    -6
8    Green Ginger         2    55.5    8    10.10    1.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Daisy Buchanan - 74 - +74 1.0 -
2 Rose Velvet - 73 - +73 1.0 -
3 Second Breath - 79 - +79 1.0 -
4 Outlaw - 73 - +73 1.0 -
5 Mandalay 67 53 63 -10 2.0 -
6 Arrow Sky - 50 - +50 2.5 -
7 Walala Wasala 62 61 56 +5 2.0 -
8 Green Ginger - 37 - +37 1.0 -
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