Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN JUVENILE PLATE (For 2 yo R100 000 Win BSA / CRS Bonus)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
6 / 8
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    Magical River        2    57.5    1    0.00     2.0   -     -            -     +0
2    Golden Link          3    60.0    2    0.10     3.0   -     -            -     +0
3    Fire Alarm           3    57.5    3    3.35     3.0   -     -            -     +0
4    Nikes Ray Of Light   3    60.0    4    3.45     3.0   -     -            -     +0
5    Can't Say No         3    57.5    5    3.55     3.0   -     -            -     +0
6    Brad Bown            2    60.0    6    21.05    2.0   -     -            -     +0
99   Bumble Bee Gold      2    60.0    99   0.00     2.0   -     -            -     +0
99   First Lord           2    60.0    99   0.00     2.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Magical River - 74 - +74 2.0 -
2 Golden Link - 99 - +99 3.0 -
3 Fire Alarm - 70 - +70 3.0 -
4 Nikes Ray Of Light - 65 - +65 3.0 -
5 Can't Say No - 83 - +83 3.0 -
6 Brad Bown - 50 - +50 2.0 -
99 Bumble Bee Gold - 56 - - 2.0 -
99 First Lord - 70 - - 2.0 -
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