Official NHA Assessment

Race 1: 4RACING 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
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
10 / 11
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    Ripple Effect        2    57.5    1    0.00     5.0   -     -            -     +0
2    Heirloom             4    56.0    2    2.00     9.0   -     -            -     +0
3    Zinovi               2    60.0    3    2.25     5.0   -     -            -     +0
4    Move On Over         2    57.5    4    6.00     5.0   -     -            -     +0
5    Troppo Veloce        2    57.5    5    6.50     5.0   -     -            -     +0
6    Fire 'N Flames       4    60.0    6    8.75     9.0   -     -            -     +0
7    Arctic Flag          2    57.5    7    8.85     5.0   -     -            -     +0
8    Shachath             2    57.5    8    10.50    5.0   -     -            -     +0
9    Fast Track           2    57.5    9    12.00    5.0   -     -            -     +0
10   The Navy Lark        4    57.5    10   31.00    9.0   -     -            -     +0
99   Symbol Of Love       2    57.5    99   0.00     5.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ripple Effect - 102 - +102 5.0 -
2 Heirloom - 67 - +67 9.0 -
3 Zinovi - 120 - +120 5.0 -
4 Move On Over - 79 - +79 5.0 -
5 Troppo Veloce - 104 - +104 5.0 -
6 Fire 'N Flames - 103 - +103 9.0 -
7 Arctic Flag - 60 - +60 5.0 -
8 Shachath - 42 - +42 5.0 -
9 Fast Track - 45 - +45 5.0 -
10 The Navy Lark - 74 - +74 9.0 -
99 Symbol Of Love - 94 - - 5.0 -
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