Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE (3-year-olds) (For Maiden 3 year-olds)

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Line Horse
Master Forester
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
6 / 7
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    Master Forester      3    60.0    1    0.00     10.5  77    77           77    +0
2    Nikes Ray Of Light   3    60.0    2    0.50     10.5  75    77           77    +2
3    Kohana               2    60.0    3    2.25     7.0   -     84           84    +84
4    Prince Antonio       3    60.0    4    8.00     10.5  -     77           77    +77
5    Just For U           2    57.5    5    11.75    7.0   -     79           79    +79
6    Burn Bright          3    57.5    6    16.25    10.5  -     72           72    +72
7    Very Var Var         2    57.5    7    20.75    7.0   -     79           79    +79
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Master Forester Line 77 90 77 +13 10.5
2 Nikes Ray Of Light 75 65 77 -12 10.5 -
3 Kohana - 70 84 -14 7.0 -
4 Prince Antonio - 63 77 -14 10.5 -
5 Just For U - 68 79 -11 7.0 -
6 Burn Bright - 68 72 -4 10.5 -
7 Very Var Var - 48 79 -31 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