Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY JUVENILE PLATE (Fillies) (For 2 yof R100 000 Win BSA / RCS Bonus)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
0 / 9
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    Marchland            2    57.0    1    0.00     3.0   -     -            -     +0
2    Obsidian Star        2    57.0    2    5.50     3.0   -     -            -     +0
3    Rungstedland         2    57.0    3    5.75     3.0   -     -            -     +0
4    Rock Me Mama         2    57.0    4    7.25     3.0   -     -            -     +0
5    Princess Of Ajiaal   2    57.0    5    7.50     3.0   -     -            -     +0
6    Daffodil Delight     2    60.0    6    8.75     3.0   -     -            -     +0
7    Saboteur             2    57.0    7    10.00    3.0   -     -            -     +0
8    Bold Tigress         2    57.0    8    99.99    3.0   -     -            -     +0
99   Weekend In Aspen     2    57.0    99   0.00     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 Marchland - - - - 3.0 -
2 Obsidian Star - - - - 3.0 -
3 Rungstedland - - - - 3.0 -
4 Rock Me Mama - - - - 3.0 -
5 Princess Of Ajiaal - - - - 3.0 -
6 Daffodil Delight - - - - 3.0 -
7 Saboteur - - - - 3.0 -
8 Bold Tigress - - - - 3.0 -
99 Weekend In Aspen - - - - 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