Official NHA Assessment

Race 5: OPEN A TABGOLD ACCOUNT - 031 314 1874 MR 82 HANDICAP (Open)

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Line Horse
Voldemort
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
5 / 9
Within 2 points
Significant Diffs
2 / 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    Parmenion            5    59.5    1    0.00     0.0   81    78           81    +0
2    Imposing             2    57.5    2    0.50     0.0   80    79           79    -1
3    Voldemort            6    60.0    3    1.50     0.0   82    82           82    +0
4    Copper John          4    54.5    4    1.65     6.0   72    59           62    -10
5    Plaza Accord         2    59.5    5    2.75     0.0   82    80           80    -2
6    Lord Wylie           7    59.5    6    3.95     0.0   81    79           79    -2
7    All The Time         3    60.0    7    4.25     8.5   82    63           72    -10
8    Iron Will            4    56.0    8    4.40     6.0   74    59           64    -10
9    Mr Henley            2    60.5    9    4.90     0.0   83    80           80    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Parmenion 81 78 81 -3 0.0 -
2 Imposing 80 107 79 +28 0.0 -
3 Voldemort Line 82 81 82 -1 0.0
4 Copper John 72 61 62 -1 6.0 -
5 Plaza Accord 82 84 80 +4 0.0 -
6 Lord Wylie 81 69 79 -10 0.0 -
7 All The Time 82 74 72 +2 8.5 -
8 Iron Will 74 63 64 -1 6.0 -
9 Mr Henley 83 82 80 +2 0.0 -
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