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 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
6 / 8
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    Carbonado            2    60.0    1    0.00     1.0   -     -            -     +0
2    Emily's Spirit       2    60.0    2    0.25     1.0   -     -            -     +0
3    Glitterfox           2    60.0    3    2.50     1.0   -     -            -     +0
4    Tufaan               2    60.0    4    3.00     1.0   -     -            -     +0
5    Begonia              2    58.5    5    4.00     1.0   -     -            -     +0
6    Literal Image        2    60.0    6    4.10     1.0   -     -            -     +0
99   Dream Scape          5    60.0    99   0.00     0.0   -     -            -     +0
99   Double Duty          2    60.0    99   0.00     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 Carbonado - 92 - +92 1.0 -
2 Emily's Spirit - 53 - +53 1.0 -
3 Glitterfox - 57 - +57 1.0 -
4 Tufaan - 55 - +55 1.0 -
5 Begonia - 66 - +66 1.0 -
6 Literal Image - 57 - +57 1.0 -
99 Dream Scape - 56 - - 0.0 -
99 Double Duty - - - - 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