Official NHA Assessment

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

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Line Horse
None identified
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 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    Family Law           2    60.0    1    0.00     3.0   -     -            -     +0
2    Silvonian            3    60.0    2    0.10     4.5   -     -            -     +0
3    Serendipitous        3    55.0    3    1.35     4.5   -     -            -     +0
4    Golden Link          3    60.0    4    2.85     4.5   -     -            -     +0
5    My Best Shot         3    60.0    5    6.10     4.5   -     -            -     +0
6    King's Sailor        3    60.0    6    10.35    4.5   -     -            -     +0
7    Brad Bown            2    60.0    7    13.10    3.0   -     -            -     +0
8    Shoulda Known        2    60.0    8    15.35    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 Family Law - 100 - +100 3.0 -
2 Silvonian - 86 - +86 4.5 -
3 Serendipitous - 60 - +60 4.5 -
4 Golden Link - 99 - +99 4.5 -
5 My Best Shot - 116 - +116 4.5 -
6 King's Sailor - 67 - +67 4.5 -
7 Brad Bown - 50 - +50 3.0 -
8 Shoulda Known - - - ✓ Match 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