Official NHA Assessment

Race 2: HOLLYWOODBETS DURBANVILLE COUNTRY SERIES MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Nile The Boss
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
10 / 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    Kythera              2    58.0    1    0.00     7.0   -     88           6     +6
2    Amethystic           2    60.0    2    3.25     7.0   62    92           92    +30
3    Nile The Boss        4    58.0    3    4.25     12.0  78    78           78    +0
4    Love Shack           2    58.0    4    4.55     7.0   -     88           88    +88
5    Night Vigil          4    58.0    5    4.95     12.0  -     78           78    +78
6    Three Coins          2    58.0    6    5.45     7.0   -     88           88    +88
7    Pineapplemintgreen   2    58.0    7    6.70     7.0   -     88           88    +88
8    La Pequenita         3    58.0    8    6.90     10.5  -     81           81    +81
9    Silent Winter        2    58.0    9    10.15    7.0   -     88           88    +88
99   Brave Winter         2    58.0    99   0.00     7.0   -     88           88    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kythera - 87 6 +81 7.0 -
2 Amethystic 62 50 92 -42 7.0 -
3 Nile The Boss Line 78 52 78 -26 12.0
4 Love Shack - 69 88 -19 7.0 -
5 Night Vigil - 91 78 +13 12.0 -
6 Three Coins - 76 88 -12 7.0 -
7 Pineapplemintgreen - 95 88 +7 7.0 -
8 La Pequenita - 62 81 -19 10.5 -
9 Silent Winter - - 88 -88 7.0 -
99 Brave Winter - 36 88 -52 7.0 -
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