Official NHA Assessment

Race 8: KLAWERVLEI STUD CLASS 3 (Open. Benchmark at 60.0kg = 96)

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Line Horse
Talk To The Master
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 11
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    Gem King             6    60.5    1    0.00     0.0   97    111          103   +6
2    Arctic Wizard        3    56.0    2    0.20     5.0   95    92           92    -3
3    Talk To The Master   2    60.0    3    1.20     3.5   103   103          103   +0
4    War Chariot          4    52.0    4    1.40     6.0   83    82           82    -1
5    Riverstone           2    56.5    5    2.65     3.5   89    96           96    +7
6    French Flame         2    57.5    6    3.90     3.5   98    98           98    +0
7    Stated               2    55.5    7    4.65     3.5   94    94           94    +0
8    Surge Of Power       2    54.5    8    6.15     3.5   92    92           92    +0
9    Silver Crown         2    57.5    9    7.65     3.5   91    98           98    +7
10   Beechamwood Boy      6    57.0    10   9.90     0.0   90    104          104   +14
99   Dean Street          3    60.5    99   0.00     5.0   -     101          101   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gem King 97 108 103 +5 0.0 -
2 Arctic Wizard 95 110 92 +18 5.0 -
3 Talk To The Master Line 103 106 103 +3 3.5
4 War Chariot 83 82 82 ✓ Match 6.0 -
5 Riverstone 89 84 96 -12 3.5 -
6 French Flame 98 82 98 -16 3.5 -
7 Stated 94 91 94 -3 3.5 -
8 Surge Of Power 92 80 92 -12 3.5 -
9 Silver Crown 91 84 98 -14 3.5 -
10 Beechamwood Boy 90 84 104 -20 0.0 -
99 Dean Street - 102 101 +1 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