Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN JUVENILE PLATE (Fillies) (For Maiden 2 year-old Fillies. R60 000 Win BSA Bon

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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    Onnetilia            2    60.0    1    0.00     0.0   -     -            -     +0
2    Bavarian Jet         2    60.0    2    0.50     0.0   -     -            -     +0
3    Eclair               2    60.0    3    0.75     0.0   -     -            -     +0
4    Flowers Of Nike      2    58.5    4    1.75     0.0   -     -            -     +0
5    Sugarberry           2    60.0    5    3.00     0.0   -     -            -     +0
6    Racinante            2    60.0    6    5.75     0.0   -     -            -     +0
7    Head Mistress        2    60.0    7    6.75     0.0   -     -            -     +0
8    Lady Sheeva          2    60.0    8    10.50    0.0   -     -            -     +0
9    Antonia Augusta      2    60.0    9    11.50    0.0   -     -            -     +0
10   Claregari            2    60.0    10   11.75    0.0   -     -            -     +0
99   Morning Breeze       2    60.0    99   0.00     0.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Onnetilia - 64 - +64 0.0 -
2 Bavarian Jet - 69 - +69 0.0 -
3 Eclair - 54 - +54 0.0 -
4 Flowers Of Nike - 69 - +69 0.0 -
5 Sugarberry - 60 - +60 0.0 -
6 Racinante - 50 - +50 0.0 -
7 Head Mistress - 64 - +64 0.0 -
8 Lady Sheeva - 58 - +58 0.0 -
9 Antonia Augusta - 57 - +57 0.0 -
10 Claregari - 42 - +42 0.0 -
99 Morning Breeze - 28 - - 0.0 -
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