Official NHA Assessment

Race 2: umTHOMBOTHI STAKES (For all Horses. Non-Black Type)

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Line Horse
Miss Platina
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
4 / 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    Selukwe              3    55.0    1    0.00     5.0   97    92           92    -5
2    Miss Platina         4    53.0    2    3.20     2.5   96    96           96    +0
3    Positive Attitude    6    52.0    3    4.25     0.0   91    98           98    +7
4    Royal Victory        5    62.5    4    5.75     0.0   125   117          117   -8
5    Trois Trois Quatre   5    52.0    5    7.85     0.0   90    96           96    +6
6    Silent War           3    56.5    6    10.95    5.0   100   95           95    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Selukwe 97 115 92 +23 5.0 -
2 Miss Platina Line 96 92 96 -4 2.5
3 Positive Attitude 91 90 98 -8 0.0 -
4 Royal Victory 125 124 117 +7 0.0 -
5 Trois Trois Quatre 90 87 96 -9 0.0 -
6 Silent War 100 91 95 -4 5.0 -
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