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
2 / 8
Calculated = Official
Close Matches
2 / 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    King Prawn           2    60.0    1    0.00     3.0   -     -            -     +0
2    Pop Chart            2    60.0    2    0.50     3.0   -     -            -     +0
3    Royal Kingdom        2    60.0    3    1.75     3.0   -     -            -     +0
4    Supreme Judge        2    60.0    4    14.25    3.0   -     -            -     +0
5    Jet Set Run          2    57.5    5    14.75    3.0   -     -            -     +0
6    Dream Team Machine   2    60.0    6    20.25    3.0   -     -            -     +0
7    Kookwater            2    60.0    7    22.50    3.0   -     -            -     +0
8    Shockman             2    60.0    8    37.50    3.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 King Prawn - 98 - +98 3.0 -
2 Pop Chart - 95 - +95 3.0 -
3 Royal Kingdom - 103 - +103 3.0 -
4 Supreme Judge - 77 - +77 3.0 -
5 Jet Set Run - 80 - +80 3.0 -
6 Dream Team Machine - - - ✓ Match 3.0 -
7 Kookwater - - - ✓ Match 3.0 -
8 Shockman - 58 - +58 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