Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN JUVENILE PLATE (For 2 yo R60 000 Win BSA Bonus Series)

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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
8 / 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    Forest Spy           2    60.0    1    0.00     3.0   -     -            -     +0
2    Emily's Spirit       2    57.5    2    2.50     3.0   -     -            -     +0
3    Glitterfox           2    57.5    3    3.00     3.0   -     -            -     +0
4    Sand Bank            2    57.5    4    9.25     3.0   -     -            -     +0
5    Cheveley Moon        2    57.5    5    12.50    3.0   -     -            -     +0
6    Crionna              2    57.5    6    13.00    3.0   -     -            -     +0
7    Sunset Reaper        2    60.0    7    13.10    3.0   -     -            -     +0
8    Blonde Magic         2    57.5    8    34.10    3.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Forest Spy - 85 - +85 3.0 -
2 Emily's Spirit - 53 - +53 3.0 -
3 Glitterfox - 57 - +57 3.0 -
4 Sand Bank - 63 - +63 3.0 -
5 Cheveley Moon - 53 - +53 3.0 -
6 Crionna - 44 - +44 3.0 -
7 Sunset Reaper - 51 - +51 3.0 -
8 Blonde Magic - 69 - +69 3.0 -
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