Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN JUVENILE PLATE (For 2 yo R100 000 Win BSA / RCS 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
0 / 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    First Officer        2    60.0    1    0.00     4.0   -     -            -     +0
2    Just Carter          2    60.0    2    0.50     4.0   -     -            -     +0
3    Tp Thunderchild      2    53.5    3    4.75     4.0   -     -            -     +0
4    Wild Star            2    57.5    4    5.00     4.0   -     -            -     +0
99   American Petal       2    57.5    99   0.00     4.0   -     -            -     +0
99   J Lordi              2    60.0    99   0.00     4.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 First Officer - - - - 4.0 -
2 Just Carter - - - - 4.0 -
3 Tp Thunderchild - - - - 4.0 -
4 Wild Star - - - - 4.0 -
99 American Petal - - - - 4.0 -
99 J Lordi - - - - 4.0 -
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