Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN JUVENILE PLATE (Fillies) (For 2 yof R100 000 Win CRS 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
7 / 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    Bretty               3    60.0    1    0.00     2.0   -     -            -     +0
2    Over The Atlantic    3    60.0    2    2.25     2.0   -     -            -     +0
3    September Flower     2    60.0    3    2.50     1.0   -     -            -     +0
4    Tartan Queen         2    60.0    4    2.75     1.0   -     -            -     +0
5    Elegant Appeal       2    60.0    5    8.00     1.0   -     -            -     +0
6    Natural Wonder       3    58.5    6    13.25    2.0   -     -            -     +0
7    Miss Prior           3    60.0    7    13.50    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 Bretty - 60 - +60 2.0 -
2 Over The Atlantic - 56 - +56 2.0 -
3 September Flower - 91 - +91 1.0 -
4 Tartan Queen - 70 - +70 1.0 -
5 Elegant Appeal - 65 - +65 1.0 -
6 Natural Wonder - 55 - +55 2.0 -
7 Miss Prior - 61 - +61 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