Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE (For all Maidens)

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Line Horse
Warrior's Sword
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
7 / 9
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    Iced Marmalade       2    57.5    1    0.00     3.0   64    63           63    -1
2    World Soprano        2    60.0    2    3.00     3.0   68    68           68    +0
3    Warrior's Sword      2    60.0    3    5.00     3.0   68    68           68    +0
4    Good Shine           2    60.0    4    6.25     3.0   56    68           68    +12
5    French Romance       3    57.5    5    6.30     4.5   -     60           60    +60
6    Timeline             3    57.5    6    6.80     4.5   62    60           60    -2
7    Top Dollar           5    60.0    7    8.30     0.0   46    74           74    +28
8    Kingsboy (GB)        3    60.0    8    12.55    4.5   53    65           65    +12
99   River Fern           2    56.0    99   0.00     3.0   -     60           60    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Iced Marmalade 64 73 63 +10 3.0 -
2 World Soprano 68 65 68 -3 3.0 -
3 Warrior's Sword Line 68 63 68 -5 3.0
4 Good Shine 56 55 68 -13 3.0 -
5 French Romance - - 60 -60 4.5 -
6 Timeline 62 53 60 -7 4.5 -
7 Top Dollar 46 42 74 -32 0.0 -
8 Kingsboy (GB) 53 53 65 -12 4.5 -
99 River Fern - 73 60 +13 3.0 -
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