Official NHA Assessment

Race 7: WORLD SPORTS BETTING MR 92 HANDICAP (Open)

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Line Horse
Arctic Drift
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
3 / 8
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    Dubai Lights         4    54.5    1    0.00     1.0   81    76           81    +0
2    Arctic Drift         5    62.0    2    2.00     0.0   96    96           96    +0
3    Lion's Head          4    58.5    3    13.25    1.0   89    84           84    -5
4    Magical Midlands     4    58.0    4    14.50    1.0   88    83           83    -5
5    Secret Oasis         3    52.5    5    16.75    2.5   82    69           72    -10
6    Sudden Star          5    61.5    6    20.50    0.0   95    92           92    -3
7    Kariba Hall          4    57.0    7    34.75    1.0   86    81           81    -5
8    Coup De Main         4    52.5    8    34.95    1.0   74    72           72    -2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dubai Lights 81 77 81 -4 1.0 -
2 Arctic Drift Line 96 97 96 +1 0.0
3 Lion's Head 89 84 84 ✓ Match 1.0 -
4 Magical Midlands 88 79 83 -4 1.0 -
5 Secret Oasis 82 81 72 +9 2.5 -
6 Sudden Star 95 86 92 -6 0.0 -
7 Kariba Hall 86 86 81 +5 1.0 -
8 Coup De Main 74 62 72 -10 1.0 -
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