Official NHA Assessment

Race 5: www.galloptv.co.za CLASS 3 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 96)

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Line Horse
Russian Doll
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
5 / 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    Miss Ladyaterix      3    56.5    1    0.00     10.5  89    85           85    -4
2    Convocation          5    57.5    2    1.20     0.0   91    108          108   +17
3    Russian Doll         2    57.0    3    2.60     7.0   93    93           93    +0
4    Captain's Christy    4    58.0    4    2.80     12.0  92    85           85    -7
5    Lucrative            2    62.5    5    3.80     7.0   101   104          104   +3
6    Jeanne Darc          3    60.0    6    4.05     10.5  96    92           92    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Miss Ladyaterix 89 92 85 +7 10.5 -
2 Convocation 91 94 108 -14 0.0 -
3 Russian Doll Line 93 93 93 ✓ Match 7.0
4 Captain's Christy 92 95 85 +10 12.0 -
5 Lucrative 101 98 104 -6 7.0 -
6 Jeanne Darc 96 83 92 -9 10.5 -
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