Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (F & M) (For Maiden F & M)

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Line Horse
Dondoyaki
Reference for assessment
Exact Matches
1 / 17
Calculated = Official
Close Matches
1 / 17
Within 2 points
Significant Diffs
13 / 17
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    Queen Of Pearls      2    59.0    1    0.00     5.5   -     80           6     +6
2    Dondoyaki            2    59.0    2    0.20     5.5   80    80           80    +0
3    Blooming Lovely      3    59.0    3    1.70     8.5   -     74           74    +74
4    Truly Magical        2    59.0    4    3.60     5.5   -     80           80    +80
5    Erebus               2    59.0    5    3.85     5.5   67    80           80    +13
6    Savara's Princess    2    59.0    6    4.35     5.5   75    80           80    +5
7    Rissiepit            3    59.0    7    7.05     8.5   -     74           74    +74
8    Bosphorus Strait     3    59.0    8    7.15     8.5   -     74           74    +74
9    Chilli Marmalade     5    60.0    9    9.45     0.0   52    93           93    +41
10   Come Together        3    59.0    10   10.15    8.5   -     74           74    +74
11   My Queen Amanat      3    57.5    11   10.65    8.5   -     71           71    +71
12   The Reason           3    55.0    12   11.05    8.5   -     66           66    +66
13   Red Enchantress      2    55.0    13   13.45    5.5   -     72           72    +72
14   Loveonthehorizon     3    59.0    14   13.75    8.5   -     74           74    +74
15   Winter Wedding       2    59.0    15   19.00    5.5   -     80           80    +80
99   Duchess Di           3    59.0    99   0.00     8.5   -     74           74    +0
99   Green Street         3    60.0    99   0.00     8.5   -     76           76    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Queen Of Pearls - 80 6 +74 5.5 -
2 Dondoyaki Line 80 74 80 -6 5.5
3 Blooming Lovely - 77 74 +3 8.5 -
4 Truly Magical - 67 80 -13 5.5 -
5 Erebus 67 66 80 -14 5.5 -
6 Savara's Princess 75 67 80 -13 5.5 -
7 Rissiepit - 60 74 -14 8.5 -
8 Bosphorus Strait - - 74 -74 8.5 -
9 Chilli Marmalade 52 48 93 -45 0.0 -
10 Come Together - 70 74 -4 8.5 -
11 My Queen Amanat - 57 71 -14 8.5 -
12 The Reason - 73 66 +7 8.5 -
13 Red Enchantress - 66 72 -6 5.5 -
14 Loveonthehorizon - 59 74 -15 8.5 -
15 Winter Wedding - 75 80 -5 5.5 -
99 Duchess Di - 74 74 ✓ Match 8.5 -
99 Green Street - 66 76 -10 8.5 -
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