Official NHA Assessment

Race 7: GREYVILLE CONVENTION CENTRE MR 70 HANDICAP (Open)

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Line Horse
Hallerbos
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
6 / 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    Prince Vihaan        3    58.0    1    0.00     6.0   66    66           66    +0
2    Hallerbos            3    57.0    2    4.30     6.0   64    64           64    +0
3    Preemptive Strike    4    57.0    3    4.35     3.5   67    69           69    +2
4    American Dream       3    59.0    4    5.95     6.0   68    68           68    +0
5    Green Dream          5    59.5    5    6.85     0.0   69    81           81    +12
6    Master Of Law        3    61.0    6    8.45     6.0   72    72           72    +0
7    Bugsy Malone         5    55.5    7    10.95    0.0   61    73           73    +12
8    Enid's Girl          2    53.5    8    13.55    0.0   69    69           69    +0
99   Lou Lou The Legend   3    55.0    99   0.00     6.0   -     60           60    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Prince Vihaan 66 89 66 +23 6.0 -
2 Hallerbos Line 64 57 64 -7 6.0
3 Preemptive Strike 67 70 69 +1 3.5 -
4 American Dream 68 81 68 +13 6.0 -
5 Green Dream 69 60 81 -21 0.0 -
6 Master Of Law 72 73 72 +1 6.0 -
7 Bugsy Malone 61 49 73 -24 0.0 -
8 Enid's Girl 69 59 69 -10 0.0 -
99 Lou Lou The Legend - 59 60 -1 6.0 -
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