Official NHA Assessment

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

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
0 / 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    Olaf The Stout       2    60.0    1    0.00     2.0   -     -            -     +0
2    Fyfield Legend       2    60.0    2    8.25     2.0   -     -            -     +0
3    Red Birch            2    57.5    3    9.50     2.0   -     -            -     +0
4    Digital Warfare      2    60.0    4    13.25    2.0   -     -            -     +0
5    Maestro Azul         2    60.0    5    15.50    2.0   -     -            -     +0
6    Silva Streaker       2    57.5    6    20.25    2.0   -     -            -     +0
99   Weekend In Aspen     2    57.5    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 Olaf The Stout - - - - 2.0 -
2 Fyfield Legend - - - - 2.0 -
3 Red Birch - - - - 2.0 -
4 Digital Warfare - - - - 2.0 -
5 Maestro Azul - - - - 2.0 -
6 Silva Streaker - - - - 2.0 -
99 Weekend In Aspen - - - - 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