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 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
6 / 6
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    Confetti             2    60.0    1    0.00     1.0   -     -            -     +0
2    Cape Flower          3    60.0    2    4.50     2.0   -     -            -     +0
3    Queen Of Jazz        2    60.0    3    6.75     1.0   -     -            -     +0
4    Extraction           2    60.0    4    8.00     1.0   -     -            -     +0
5    Blueberry Blue       2    60.0    5    8.10     1.0   -     -            -     +0
6    One Wish             2    60.0    6    15.35    1.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Confetti - 81 - +81 1.0 -
2 Cape Flower - 57 - +57 2.0 -
3 Queen Of Jazz - 63 - +63 1.0 -
4 Extraction - 54 - +54 1.0 -
5 Blueberry Blue - 75 - +75 1.0 -
6 One Wish - 60 - +60 1.0 -
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