Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN JUVENILE PLATE (Fillies) (For 2 yof R100 000 Win BSA Bonus Series)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
8 / 9
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    Virginia Beach       2    60.0    1    0.00     3.5   -     -            -     +0
2    Heirloom             4    56.0    2    2.50     6.0   -     -            -     +0
3    Divine Moonlight     4    60.0    3    3.75     6.0   -     -            -     +0
4    Courageous           4    60.0    4    4.75     6.0   -     -            -     +0
5    Duellona             2    60.0    5    5.50     3.5   -     -            -     +0
6    White Hills          2    60.0    6    5.60     3.5   -     -            -     +0
7    The Navy Lark        4    60.0    7    6.75     6.0   -     -            -     +0
8    Shilpa's Moon        2    60.0    8    12.00    3.5   -     -            -     +0
99   Arctic Flag          2    57.5    99   0.00     3.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Virginia Beach - 82 - +82 3.5 -
2 Heirloom - 67 - +67 6.0 -
3 Divine Moonlight - 75 - +75 6.0 -
4 Courageous - 62 - +62 6.0 -
5 Duellona - 58 - +58 3.5 -
6 White Hills - 66 - +66 3.5 -
7 The Navy Lark - 74 - +74 6.0 -
8 Shilpa's Moon - 84 - +84 3.5 -
99 Arctic Flag - 60 - - 3.5 -
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