Official NHA Assessment

Race 4: Pick 'n Pay CLASS 2 (Open. Benchmark at 60.0kg = 110)

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Line Horse
Itsrainingwilliam
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
3 / 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    Silver Operator      5    60.5    1    0.00     0.0   111   111          111   +0
2    Underworld           2    52.0    2    0.20     0.0   103   94           94    -9
3    Itsrainingwilliam    2    59.0    3    0.25     0.0   108   108          108   +0
4    Speed Machine        4    58.0    4    0.65     3.0   106   105          105   -1
5    Captain Fontane      4    60.5    5    0.95     3.0   111   109          109   -2
6    Seeking The One      2    53.0    6    1.35     0.0   96    99           99    +3
7    Light Speed          2    57.5    7    1.40     0.0   105   108          108   +3
8    Tout A Fait          3    56.5    8    2.15     5.0   103   96           96    -7
9    Thefutureisbright    3    54.5    9    4.65     5.0   99    89           89    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Silver Operator 111 115 111 +4 0.0 -
2 Underworld 103 111 94 +17 0.0 -
3 Itsrainingwilliam Line 108 108 108 ✓ Match 0.0
4 Speed Machine 106 104 105 -1 3.0 -
5 Captain Fontane 111 109 109 ✓ Match 3.0 -
6 Seeking The One 96 92 99 -7 0.0 -
7 Light Speed 105 103 108 -5 0.0 -
8 Tout A Fait 103 80 96 -16 5.0 -
9 Thefutureisbright 99 94 89 +5 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