Official NHA Assessment

Race 1: BONAMANZI MAIDEN JUVENILE PLATE (For 2 yo R60 000 Win BSA Bonus Series)

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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
8 / 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    Vasilikos            2    60.0    1    0.00     1.5   -     -            -     +0
2    Imposing             2    60.0    2    0.05     1.5   -     -            -     +0
3    Hayat                2    60.0    3    0.95     1.5   -     -            -     +0
4    Eddie The Mover      2    60.0    4    2.35     1.5   -     -            -     +0
5    Zooberi              2    60.0    5    5.85     1.5   -     -            -     +0
6    Enid's Girl          2    57.5    6    7.45     1.5   -     -            -     +0
7    Arbitrator           2    60.0    7    10.45    1.5   -     -            -     +0
8    Mutirikwi            2    60.0    8    11.05    1.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vasilikos - 67 - +67 1.5 -
2 Imposing - 107 - +107 1.5 -
3 Hayat - 72 - +72 1.5 -
4 Eddie The Mover - 76 - +76 1.5 -
5 Zooberi - 78 - +78 1.5 -
6 Enid's Girl - 59 - +59 1.5 -
7 Arbitrator - 82 - +82 1.5 -
8 Mutirikwi - 64 - +64 1.5 -
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