Official NHA Assessment

Race 5: PROTEA STAKES (Grade 3) (For 2 yo R60 000 Win BSA Bonus Series)

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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
6 / 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    Karangetang          2    58.5    1    0.00     2.5   -     -            -     +0
2    River Queraress      2    60.0    2    0.50     2.5   -     -            -     +0
3    Magic Tattoo         5    58.5    3    8.50     0.0   -     -            -     +0
4    Var Park             5    55.5    4    10.75    0.0   -     -            -     +0
5    Lord Of Light        2    55.5    5    11.00    2.5   -     -            -     +0
6    Kalahari Blue        2    55.5    6    12.50    2.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Karangetang - 95 - +95 2.5 -
2 River Queraress - 88 - +88 2.5 -
3 Magic Tattoo - 93 - +93 0.0 -
4 Var Park - 87 - +87 0.0 -
5 Lord Of Light - 77 - +77 2.5 -
6 Kalahari Blue - 75 - +75 2.5 -
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