Official NHA Assessment

Race 3: WSB Spin with the Best MAIDEN PLATE (For all Maidens)

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Line Horse
White Seahorse
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
9 / 11
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    Gran Canaria         3    60.0    1    0.00     2.0   80    66           66    -14
2    Pioneer Square       3    60.0    2    0.90     2.0   83    70           73    -10
3    White Seahorse       2    60.0    3    1.20     0.0   74    74           74    +0
4    Sovereign Command    3    56.0    4    4.20     2.0   66    59           59    -7
5    Tee Dog              3    60.0    5    5.60     2.0   69    66           66    -3
6    Carnival Park        3    60.0    6    8.50     2.0   66    66           66    +0
7    Snake Alley          3    60.0    7    9.80     2.0   45    66           66    +21
8    Samuel Longsword     3    58.5    8    11.40    2.0   59    63           63    +4
9    Amandla Ngawethu     3    60.0    9    16.30    2.0   75    66           66    -9
10   Mr Razzle            3    60.0    10   16.40    2.0   -     66           66    +66
99   Tibbott Bourke       4    60.0    99   0.00     1.0   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gran Canaria 80 77 66 +11 2.0 -
2 Pioneer Square 83 101 73 +28 2.0 -
3 White Seahorse Line 74 81 74 +7 0.0
4 Sovereign Command 66 62 59 +3 2.0 -
5 Tee Dog 69 74 66 +8 2.0 -
6 Carnival Park 66 66 66 ✓ Match 2.0 -
7 Snake Alley 45 48 66 -18 2.0 -
8 Samuel Longsword 59 56 63 -7 2.0 -
9 Amandla Ngawethu 75 72 66 +6 2.0 -
10 Mr Razzle - 38 66 -28 2.0 -
99 Tibbott Bourke - 51 68 -17 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